Nitrogen cycle
•Download as PPTX, PDF•
1 like•1,341 views
The document summarizes the nitrogen cycle. It describes the key steps in the nitrogen cycle as nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification. Nitrogen fixation involves converting nitrogen gas from the atmosphere into inorganic nitrogen compounds usable by plants and animals. This is done mainly by nitrogen-fixing bacteria. The nitrogen is then assimilated by plants and animals and enters the ecosystem. As organisms die and decay, ammonification occurs which converts nitrogen into ammonia. Nitrification then transforms ammonia into nitrates which can be used by plants. Finally, denitrification returns nitrates to the atmosphere as nitrogen gas by bacteria. The document also discusses how human activities like fertilizer use and fossil fuel burning
Report
Share
Report
Share
Recommended
Nitrogen cycle
The document summarizes the nitrogen cycle. It discusses the main sources of nitrogen including the atmosphere, soil, fertilizers and volcanic activity. It then describes the key processes in the nitrogen cycle including nitrogen fixation, ammonification, nitrification, and denitrification. Nitrogen fixation occurs through symbiotic and non-symbiotic bacteria. Ammonification and nitrification are multi-step biological processes converting organic and ammonia forms of nitrogen into nitrites and nitrates. Denitrification returns nitrogen to the atmosphere through bacteria. The factors that impact these nitrogen transformations such as oxygen, temperature, pH and carbon levels are also outlined.
Nitrogen cycle
The nitrogen cycle consists of 5 main stages:
(1) Ammonification is the conversion of organic nitrogen into ammonium by microbes.
(2) Nitrification is the oxidation of ammonium to nitrite and then nitrate by bacteria.
(3) Plants uptake nitrate and convert it into amino acids and other nitrogen compounds.
(4) Nitrogen fixation converts atmospheric nitrogen to ammonium via bacteria and cyanobacteria.
(5) Denitrification reduces nitrates back to nitrogen gas which re-enters the atmosphere. The nitrogen cycle involves the circulation of nitrogen through air, soil, plants and animals via specialized microbes.
Nitrogen Cycle & How Do Human Activities Affect the Ecosystem by Divine Garcia
Nitrogen is an essential element for life that cycles between the atmosphere, soil, plants, and animals. The nitrogen cycle involves four main processes: nitrogen fixation, ammonification, nitrification, and denitrification. Nitrogen fixation involves converting nitrogen gas from the atmosphere into nitrogen compounds usable by organisms through lightning, industrial fixation, and biological fixation by bacteria. Ammonification and nitrification convert nitrogen wastes and residues into plant-usable inorganic forms through microorganisms in the soil. Denitrification returns nitrogen to the atmosphere, replenishing the atmospheric supply.
Nitrogen cycle
This is a quick undetailed presentation of the components of the Nitrogen Cycle. The worksheet that goes with it is at this link
The nitrogen cycle
The nitrogen cycle describes the movement of nitrogen through ecosystems. Nitrogen is absorbed by plants from the soil and incorporated into proteins. Animals get nitrogen by eating plant proteins. Bacteria break down nitrogenous waste from dead plants and animals, converting it into ammonium, then nitrites and nitrates, which enrich the soil. Lightning and bacteria also fix atmospheric nitrogen into forms usable by plants.
Nitrogen Cycle
Nitrogen is essential for plant and animal growth and is abundant in the atmosphere. Some bacteria and algae have the ability to "fix" nitrogen by converting atmospheric nitrogen to ammonia and nitrates that plants can use. This process of nitrogen fixation occurs through biological processes in legume root nodules and through lightning, as well as industrially. Plants take up fixed nitrogen and it enters the nitrogen cycle, being used by animals who then return it to the soil through waste. Soil bacteria convert nitrogen back to nitrates and nitrites and eventually back to atmospheric nitrogen, completing the cycle.
Nitrogen cycle
Not yet finished.
Questions asked:
1 What is Nitrogen
2 Why is Nitrogen important
3 What is nitrogen cycle
4 How does the nitrogen cycle work
5 How does human intervention affect the nitrogen cycle
- Credits to the owner of the articles and illustrations, I just created a powerpoint presentation to gather all basic and important details about the Nitrogen cycle
Nitrogen m pr
Decomposers such as bacteria and fungi break down dead organic matter and release nutrients back into the soil. Nitrogen is an essential nutrient that is recycled through a nitrogen cycle. This involves nitrogen fixation by bacteria, assimilation by plants, ammonification through decomposition, nitrification by special bacteria, and denitrification which returns nitrogen to the atmosphere. Maintaining this nitrogen cycle is important for supporting new plant growth in ecosystems.
Recommended
Nitrogen cycle
The document summarizes the nitrogen cycle. It discusses the main sources of nitrogen including the atmosphere, soil, fertilizers and volcanic activity. It then describes the key processes in the nitrogen cycle including nitrogen fixation, ammonification, nitrification, and denitrification. Nitrogen fixation occurs through symbiotic and non-symbiotic bacteria. Ammonification and nitrification are multi-step biological processes converting organic and ammonia forms of nitrogen into nitrites and nitrates. Denitrification returns nitrogen to the atmosphere through bacteria. The factors that impact these nitrogen transformations such as oxygen, temperature, pH and carbon levels are also outlined.
Nitrogen cycle
The nitrogen cycle consists of 5 main stages:
(1) Ammonification is the conversion of organic nitrogen into ammonium by microbes.
(2) Nitrification is the oxidation of ammonium to nitrite and then nitrate by bacteria.
(3) Plants uptake nitrate and convert it into amino acids and other nitrogen compounds.
(4) Nitrogen fixation converts atmospheric nitrogen to ammonium via bacteria and cyanobacteria.
(5) Denitrification reduces nitrates back to nitrogen gas which re-enters the atmosphere. The nitrogen cycle involves the circulation of nitrogen through air, soil, plants and animals via specialized microbes.
Nitrogen Cycle & How Do Human Activities Affect the Ecosystem by Divine Garcia
Nitrogen is an essential element for life that cycles between the atmosphere, soil, plants, and animals. The nitrogen cycle involves four main processes: nitrogen fixation, ammonification, nitrification, and denitrification. Nitrogen fixation involves converting nitrogen gas from the atmosphere into nitrogen compounds usable by organisms through lightning, industrial fixation, and biological fixation by bacteria. Ammonification and nitrification convert nitrogen wastes and residues into plant-usable inorganic forms through microorganisms in the soil. Denitrification returns nitrogen to the atmosphere, replenishing the atmospheric supply.
Nitrogen cycle
This is a quick undetailed presentation of the components of the Nitrogen Cycle. The worksheet that goes with it is at this link
The nitrogen cycle
The nitrogen cycle describes the movement of nitrogen through ecosystems. Nitrogen is absorbed by plants from the soil and incorporated into proteins. Animals get nitrogen by eating plant proteins. Bacteria break down nitrogenous waste from dead plants and animals, converting it into ammonium, then nitrites and nitrates, which enrich the soil. Lightning and bacteria also fix atmospheric nitrogen into forms usable by plants.
Nitrogen Cycle
Nitrogen is essential for plant and animal growth and is abundant in the atmosphere. Some bacteria and algae have the ability to "fix" nitrogen by converting atmospheric nitrogen to ammonia and nitrates that plants can use. This process of nitrogen fixation occurs through biological processes in legume root nodules and through lightning, as well as industrially. Plants take up fixed nitrogen and it enters the nitrogen cycle, being used by animals who then return it to the soil through waste. Soil bacteria convert nitrogen back to nitrates and nitrites and eventually back to atmospheric nitrogen, completing the cycle.
Nitrogen cycle
Not yet finished.
Questions asked:
1 What is Nitrogen
2 Why is Nitrogen important
3 What is nitrogen cycle
4 How does the nitrogen cycle work
5 How does human intervention affect the nitrogen cycle
- Credits to the owner of the articles and illustrations, I just created a powerpoint presentation to gather all basic and important details about the Nitrogen cycle
Nitrogen m pr
Decomposers such as bacteria and fungi break down dead organic matter and release nutrients back into the soil. Nitrogen is an essential nutrient that is recycled through a nitrogen cycle. This involves nitrogen fixation by bacteria, assimilation by plants, ammonification through decomposition, nitrification by special bacteria, and denitrification which returns nitrogen to the atmosphere. Maintaining this nitrogen cycle is important for supporting new plant growth in ecosystems.
Nitrogen cycle - Honors only 2.04
The nitrogen cycle describes how nitrogen is converted between its various forms as it circulates in the biosphere and lithosphere. Atmospheric nitrogen is converted to ammonia or nitrates through nitrogen fixation, which occurs via lightning, industrial fixation, or biological fixation by bacteria. Ammonia is converted to nitrites and nitrates through nitrification by nitrifying bacteria. Organic nitrogen from dead organisms is broken down into ammonium through ammonification by bacteria. Nitrates are converted back to atmospheric nitrogen through denitrification, replenishing the nitrogen in the air.
Nitrogen cycle
The document summarizes the nitrogen cycle, which is the process by which nitrogen is converted between various chemical forms through biological and physical processes like fixation, ammonification, nitrification, and denitrification. It discusses how these processes work together in ecosystems and how human activities have significantly impacted the global nitrogen cycle through fossil fuel combustion, fertilizer use, and waste release.
Nitrogen cycle
The document discusses the nitrogen cycle. It describes how nitrogen exists in the atmosphere but is converted by bacteria and algae into forms that can be used by plants and animals through biological fixation. Lightning and industrial processes also fix nitrogen. Plants take up nitrogen from the soil and animals get nitrogen from eating plants. Nitrogen is returned to the soil through animal waste or decay. Bacteria then convert nitrogen back into forms that can re-enter the atmosphere, completing the cycle. The nitrogen cycle is essential for providing the nutrient needs of all living things.
Nitrogen cycle
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
NITROGEN CYCLE AND FIXATION
Science 24-7 is another affiliate of sciencetutors and webscience. Please see more resources at www.sciencetutors.zoomshare.com
Email for all science24-7 correspondence is: sciencetutorshelpdesk@gmail.com
Nitrogen cycle
The nitrogen cycle involves the transformation of nitrogen between its various chemical forms and exchanges between the atmosphere, soil, plants, and animals. Nitrogen enters the soil through decomposition, is converted to ammonium then nitrates by microbes, taken up by plant roots, and either remains in plant tissue or enters the food chain when consumed by animals. It can return to the atmosphere through denitrification by soil bacteria or industrial fixation through the Haber process. Anthropogenic activities such as agriculture and fossil fuel combustion have significantly impacted the global nitrogen cycle.
Nitrogen cycle PERIOD 5
The nitrogen cycle describes the movement of nitrogen through the environment. It involves nitrogen fixation by bacteria, ammonification by decomposers, nitrification by soil bacteria, and denitrification by bacteria in waterlogged soils that converts nitrogen back to its gaseous form. Human activities such as fossil fuel combustion, use of nitrogen fertilizers, and livestock ranching have significantly increased the global nitrogen cycle, causing issues like smog, acid rain, eutrophication, and increased greenhouse gas emissions. While some seek solutions, many nations prioritize food production over environmental impacts.
The Nitrogen Cycle
The nitrogen cycle describes how nitrogen is converted between its various forms and incorporated into living things. Nitrogen makes up 78.9% of the atmosphere but cannot be directly used by plants and animals. It must be converted to nitrogenous compounds through processes like nitrogen fixation, ammonification, nitrification, and denitrification. Legumes have root nodules containing rhizobia bacteria that convert nitrogen to ammonia. Ammonia is further converted to nitrates and nitrites by nitrifying bacteria. Plants take up nitrates to make proteins, which are consumed by animals. Dead plants and animal waste release ammonia, continuing the nitrogen cycle.
Nitrogen Cycle & Nitrogen Fixation
The nitrogen cycle describes the natural process by which nitrogen is converted between its various chemical forms and circulated between living organisms and the atmosphere. Nitrogen is essential for building proteins and other organic molecules in living things. It enters ecosystems through nitrogen fixation by bacteria or lightning. Nitrifying bacteria then convert nitrogen into nitrites and nitrates that can be absorbed by plants. Plants and animals incorporate nitrogen into their tissues through consumption or root uptake, and nitrogen returns to the atmosphere through decomposition, denitrification, and other processes. The nitrogen cycle is crucial for supporting life but anthropogenic nitrogen pollution from sources like fossil fuel combustion and fertilizer runoff can disrupt ecosystems.
Nitrogen cycle ppt
1) Nitrogen is essential for organisms but it exists mainly as unusable N2 gas in the atmosphere. It must be converted to biologically available forms through the nitrogen cycle.
2) The nitrogen cycle describes the movement of nitrogen between the atmosphere, biosphere, and lithosphere through processes like nitrogen fixation, uptake, mineralization, nitrification, and denitrification.
3) Nitrogen fixation converts atmospheric N2 to ammonium through processes like nitrogen-fixing bacteria in legume roots and the use of synthetic nitrogen fertilizers.
Nitrogen cycle
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere and terrestrial and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is nitrogen, making it the largest pool of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems. The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition. Human activities such as fossil fuel combustion, use of artificial nitrogen fertilizers, and release of nitrogen in wastewater have dramatically altered the global nitrogen cycle.
Week 11 nutrient cycles
The document discusses nutrient cycles and the key elements that make up living organisms, including carbon, oxygen, hydrogen, nitrogen, phosphorus, and sulfur. It explains how these elements cycle through ecosystems via photosynthesis, respiration, decomposition, and the absorption by plants and consumption by animals. Specific nutrient cycles like the carbon, nitrogen, and water cycles are examined in more detail.
Nitrogen Cycle
1. Nitrogen-fixing bacteria convert nitrogen gas from the air into nitrates that can be used by plants and animals.
2. Plants take up nitrates and use them to produce proteins. Animals obtain protein by eating plants or other animals.
3. After death or waste excretion, decomposer bacteria break down organic matter into nitrates, completing the cycle.
Nitrogen cycle and NITROGEN FIXATION
Nitrogen is an essential element that cycles through various forms in the environment. The nitrogen cycle involves nitrogen fixation, ammonification, nitrification, and denitrification processes carried out by microorganisms. Nitrogen fixation converts atmospheric nitrogen gas into ammonium which can then be used by plants and other organisms. Ammonification and nitrification convert organic nitrogen and ammonium into nitrates. Denitrification returns nitrogen to the atmosphere as nitrogen gas. The nitrogen cycle is crucial for ecosystems as it makes nitrogen available to support primary production.
Nitrogen and nitrogen cycle
Nitrogen is essential for life and composes 78% of the atmosphere. It is found in amino acids and is important for plant and animal nutrition. Nitrogen can be fixed from the atmosphere through lightning forming nitric oxide and nitric acid, which enters the soil as nitrates for plant uptake. Certain bacteria can also fix nitrogen. The nitrogen cycle is sustained through organic wastes like compost returning nitrogen to the soil in forms like ammonia that can again be used by plants.
Nitrogen cycle
The nitrogen cycle describes how nitrogen is converted between its various forms and circulates between the atmosphere, soil, plants, and animals. Bacteria are able to fix nitrogen from the atmosphere into ammonia, which can then be converted to nitrates that plants can absorb. Animals obtain nitrogen by eating plants or other animals, and decomposition returns unused nitrogen to the soil through ammonification and denitrification.
Nitrogen cycle
The nitrogen cycle describes how nitrogen is converted between its various chemical forms and circulates between the atmosphere, soil, water, and living organisms. It involves five processes: nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification. Nitrogen fixation converts atmospheric nitrogen to ammonia through bacteria. Assimilation incorporates nitrogen into living tissues. Ammonification and nitrification convert nitrogen waste into plant-usable nitrates. Denitrification returns nitrogen to the atmosphere. Human activities like fertilizer use can disrupt the cycle by adding excess nitrogen.
Nitrogen Fixation
Here are the answers to the questions:
1. Nitrogen is present in the form of N2 gas in the atmosphere.
2. The enzyme nitrogenase is responsible for splitting the triple N≡N bond in nitrogen fixation.
3. The Haber process is used in chemical nitrogen fixation to convert nitrogen gas to ammonia at high pressure and temperature.
4. A nodulated symbiosis is the formation of nodules in leguminous plants by Rhizobium bacteria, for example Rhizobium and chickpea.
Nitrogen Cycle
- Harshil Suthar is a student pursuing a F.Y.B.Sc in biotechnology at the government science college.
- The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted between its various chemical forms as it circulates in the ecosystem. Key processes include nitrogen fixation, nitrification, denitrification, and ammonification.
- Nitrogen-fixing bacteria such as Rhizobium and Azotobacter convert atmospheric nitrogen into organic nitrogen compounds that can be used by plants and other organisms.
Nitrogen cycle Cambridge IGCSE Biology
The nitrogen cycle describes the biological and physical processes by which nitrogen is converted between different chemical forms in the environment. These forms include ammonium, nitrite, nitrate, nitrous oxide, nitric oxide, and elemental nitrogen gas. Key processes in the nitrogen cycle are fixation, where bacteria convert nitrogen gas from the air into forms plants can use; ammonification, where dead remains release ammonium; and nitrification, where ammonium is converted to nitrites and nitrates. The cycle is essential for providing nitrogen to support life on Earth.
Nitrificación y Simbiosis
The document discusses the process of nitrification, which is a two-step process where ammonium is converted to nitrite by Nitrosomonas bacteria and then nitrite is converted to nitrate by Nitrobacter bacteria. It provides details on the optimal conditions for nitrification such as moisture level, temperature, aeration, and pH. It also discusses nitrification inhibitors which can block the conversion of ammonium to nitrate in order to retain nitrogen in the ammonium form.
Nitrogen cycle
The nitrogen cycle involves the transformation of nitrogen between its various forms through biological and physical processes. Key steps include nitrogen fixation by bacteria and lightning, ammonification by microbes converting organic nitrogen to ammonia, nitrification of ammonia to nitrites then nitrates, denitrification by bacteria reducing nitrates to nitrogen gas, and assimilation of nitrates by plants. The major reservoir of nitrogen is the atmosphere, with nitrogen-fixing bacteria and cyanobacteria converting atmospheric nitrogen to ammonia or nitrates through symbiotic and non-symbiotic biological nitrogen fixation.
More Related Content
What's hot
Nitrogen cycle - Honors only 2.04
The nitrogen cycle describes how nitrogen is converted between its various forms as it circulates in the biosphere and lithosphere. Atmospheric nitrogen is converted to ammonia or nitrates through nitrogen fixation, which occurs via lightning, industrial fixation, or biological fixation by bacteria. Ammonia is converted to nitrites and nitrates through nitrification by nitrifying bacteria. Organic nitrogen from dead organisms is broken down into ammonium through ammonification by bacteria. Nitrates are converted back to atmospheric nitrogen through denitrification, replenishing the nitrogen in the air.
Nitrogen cycle
The document summarizes the nitrogen cycle, which is the process by which nitrogen is converted between various chemical forms through biological and physical processes like fixation, ammonification, nitrification, and denitrification. It discusses how these processes work together in ecosystems and how human activities have significantly impacted the global nitrogen cycle through fossil fuel combustion, fertilizer use, and waste release.
Nitrogen cycle
The document discusses the nitrogen cycle. It describes how nitrogen exists in the atmosphere but is converted by bacteria and algae into forms that can be used by plants and animals through biological fixation. Lightning and industrial processes also fix nitrogen. Plants take up nitrogen from the soil and animals get nitrogen from eating plants. Nitrogen is returned to the soil through animal waste or decay. Bacteria then convert nitrogen back into forms that can re-enter the atmosphere, completing the cycle. The nitrogen cycle is essential for providing the nutrient needs of all living things.
Nitrogen cycle
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
NITROGEN CYCLE AND FIXATION
Science 24-7 is another affiliate of sciencetutors and webscience. Please see more resources at www.sciencetutors.zoomshare.com
Email for all science24-7 correspondence is: sciencetutorshelpdesk@gmail.com
Nitrogen cycle
The nitrogen cycle involves the transformation of nitrogen between its various chemical forms and exchanges between the atmosphere, soil, plants, and animals. Nitrogen enters the soil through decomposition, is converted to ammonium then nitrates by microbes, taken up by plant roots, and either remains in plant tissue or enters the food chain when consumed by animals. It can return to the atmosphere through denitrification by soil bacteria or industrial fixation through the Haber process. Anthropogenic activities such as agriculture and fossil fuel combustion have significantly impacted the global nitrogen cycle.
Nitrogen cycle PERIOD 5
The nitrogen cycle describes the movement of nitrogen through the environment. It involves nitrogen fixation by bacteria, ammonification by decomposers, nitrification by soil bacteria, and denitrification by bacteria in waterlogged soils that converts nitrogen back to its gaseous form. Human activities such as fossil fuel combustion, use of nitrogen fertilizers, and livestock ranching have significantly increased the global nitrogen cycle, causing issues like smog, acid rain, eutrophication, and increased greenhouse gas emissions. While some seek solutions, many nations prioritize food production over environmental impacts.
The Nitrogen Cycle
The nitrogen cycle describes how nitrogen is converted between its various forms and incorporated into living things. Nitrogen makes up 78.9% of the atmosphere but cannot be directly used by plants and animals. It must be converted to nitrogenous compounds through processes like nitrogen fixation, ammonification, nitrification, and denitrification. Legumes have root nodules containing rhizobia bacteria that convert nitrogen to ammonia. Ammonia is further converted to nitrates and nitrites by nitrifying bacteria. Plants take up nitrates to make proteins, which are consumed by animals. Dead plants and animal waste release ammonia, continuing the nitrogen cycle.
Nitrogen Cycle & Nitrogen Fixation
The nitrogen cycle describes the natural process by which nitrogen is converted between its various chemical forms and circulated between living organisms and the atmosphere. Nitrogen is essential for building proteins and other organic molecules in living things. It enters ecosystems through nitrogen fixation by bacteria or lightning. Nitrifying bacteria then convert nitrogen into nitrites and nitrates that can be absorbed by plants. Plants and animals incorporate nitrogen into their tissues through consumption or root uptake, and nitrogen returns to the atmosphere through decomposition, denitrification, and other processes. The nitrogen cycle is crucial for supporting life but anthropogenic nitrogen pollution from sources like fossil fuel combustion and fertilizer runoff can disrupt ecosystems.
Nitrogen cycle ppt
1) Nitrogen is essential for organisms but it exists mainly as unusable N2 gas in the atmosphere. It must be converted to biologically available forms through the nitrogen cycle.
2) The nitrogen cycle describes the movement of nitrogen between the atmosphere, biosphere, and lithosphere through processes like nitrogen fixation, uptake, mineralization, nitrification, and denitrification.
3) Nitrogen fixation converts atmospheric N2 to ammonium through processes like nitrogen-fixing bacteria in legume roots and the use of synthetic nitrogen fertilizers.
Nitrogen cycle
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere and terrestrial and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is nitrogen, making it the largest pool of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems. The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition. Human activities such as fossil fuel combustion, use of artificial nitrogen fertilizers, and release of nitrogen in wastewater have dramatically altered the global nitrogen cycle.
Week 11 nutrient cycles
The document discusses nutrient cycles and the key elements that make up living organisms, including carbon, oxygen, hydrogen, nitrogen, phosphorus, and sulfur. It explains how these elements cycle through ecosystems via photosynthesis, respiration, decomposition, and the absorption by plants and consumption by animals. Specific nutrient cycles like the carbon, nitrogen, and water cycles are examined in more detail.
Nitrogen Cycle
1. Nitrogen-fixing bacteria convert nitrogen gas from the air into nitrates that can be used by plants and animals.
2. Plants take up nitrates and use them to produce proteins. Animals obtain protein by eating plants or other animals.
3. After death or waste excretion, decomposer bacteria break down organic matter into nitrates, completing the cycle.
Nitrogen cycle and NITROGEN FIXATION
Nitrogen is an essential element that cycles through various forms in the environment. The nitrogen cycle involves nitrogen fixation, ammonification, nitrification, and denitrification processes carried out by microorganisms. Nitrogen fixation converts atmospheric nitrogen gas into ammonium which can then be used by plants and other organisms. Ammonification and nitrification convert organic nitrogen and ammonium into nitrates. Denitrification returns nitrogen to the atmosphere as nitrogen gas. The nitrogen cycle is crucial for ecosystems as it makes nitrogen available to support primary production.
Nitrogen and nitrogen cycle
Nitrogen is essential for life and composes 78% of the atmosphere. It is found in amino acids and is important for plant and animal nutrition. Nitrogen can be fixed from the atmosphere through lightning forming nitric oxide and nitric acid, which enters the soil as nitrates for plant uptake. Certain bacteria can also fix nitrogen. The nitrogen cycle is sustained through organic wastes like compost returning nitrogen to the soil in forms like ammonia that can again be used by plants.
Nitrogen cycle
The nitrogen cycle describes how nitrogen is converted between its various forms and circulates between the atmosphere, soil, plants, and animals. Bacteria are able to fix nitrogen from the atmosphere into ammonia, which can then be converted to nitrates that plants can absorb. Animals obtain nitrogen by eating plants or other animals, and decomposition returns unused nitrogen to the soil through ammonification and denitrification.
Nitrogen cycle
The nitrogen cycle describes how nitrogen is converted between its various chemical forms and circulates between the atmosphere, soil, water, and living organisms. It involves five processes: nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification. Nitrogen fixation converts atmospheric nitrogen to ammonia through bacteria. Assimilation incorporates nitrogen into living tissues. Ammonification and nitrification convert nitrogen waste into plant-usable nitrates. Denitrification returns nitrogen to the atmosphere. Human activities like fertilizer use can disrupt the cycle by adding excess nitrogen.
Nitrogen Fixation
Here are the answers to the questions:
1. Nitrogen is present in the form of N2 gas in the atmosphere.
2. The enzyme nitrogenase is responsible for splitting the triple N≡N bond in nitrogen fixation.
3. The Haber process is used in chemical nitrogen fixation to convert nitrogen gas to ammonia at high pressure and temperature.
4. A nodulated symbiosis is the formation of nodules in leguminous plants by Rhizobium bacteria, for example Rhizobium and chickpea.
Nitrogen Cycle
- Harshil Suthar is a student pursuing a F.Y.B.Sc in biotechnology at the government science college.
- The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted between its various chemical forms as it circulates in the ecosystem. Key processes include nitrogen fixation, nitrification, denitrification, and ammonification.
- Nitrogen-fixing bacteria such as Rhizobium and Azotobacter convert atmospheric nitrogen into organic nitrogen compounds that can be used by plants and other organisms.
Nitrogen cycle Cambridge IGCSE Biology
The nitrogen cycle describes the biological and physical processes by which nitrogen is converted between different chemical forms in the environment. These forms include ammonium, nitrite, nitrate, nitrous oxide, nitric oxide, and elemental nitrogen gas. Key processes in the nitrogen cycle are fixation, where bacteria convert nitrogen gas from the air into forms plants can use; ammonification, where dead remains release ammonium; and nitrification, where ammonium is converted to nitrites and nitrates. The cycle is essential for providing nitrogen to support life on Earth.
What's hot (20)
Viewers also liked
Nitrificación y Simbiosis
The document discusses the process of nitrification, which is a two-step process where ammonium is converted to nitrite by Nitrosomonas bacteria and then nitrite is converted to nitrate by Nitrobacter bacteria. It provides details on the optimal conditions for nitrification such as moisture level, temperature, aeration, and pH. It also discusses nitrification inhibitors which can block the conversion of ammonium to nitrate in order to retain nitrogen in the ammonium form.
Nitrogen cycle
The nitrogen cycle involves the transformation of nitrogen between its various forms through biological and physical processes. Key steps include nitrogen fixation by bacteria and lightning, ammonification by microbes converting organic nitrogen to ammonia, nitrification of ammonia to nitrites then nitrates, denitrification by bacteria reducing nitrates to nitrogen gas, and assimilation of nitrates by plants. The major reservoir of nitrogen is the atmosphere, with nitrogen-fixing bacteria and cyanobacteria converting atmospheric nitrogen to ammonia or nitrates through symbiotic and non-symbiotic biological nitrogen fixation.
Physiological and Molecular basis of NUE
1) Nitrogen use efficiency (NUE) refers to the efficiency with which a plant acquires nitrogen from the soil and utilizes it for growth and grain production. Improving NUE is important to reduce environmental pollution from nitrogen loss and decrease production costs.
2) NUE is a complex trait influenced by both internal genetic factors and external environmental conditions. It has two main components - nitrogen uptake efficiency and nitrogen utilization efficiency. Key physiological and molecular mechanisms controlling NUE include nitrogen transport, assimilation, remobilization and storage.
3) Various approaches can be used to improve NUE in crops, including marker-assisted breeding to introgress quantitative trait loci associated with NUE, transgenic methods to modify expression of genes regulating
CS_701_Nitrate Assimilation by arnold_damaso
Nitrate assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs.
Plants like castor reduce a lot of nitrate in the root itself, and excrete the resulting base. Some of the base produced in the shoots is transported to the roots as salts of organic acids while a small amount of the carboxylates are just stored in the shoot itself. However, about 99% of the organic nitrogen in the biosphere is derived from the assimilation of nitrate. NH4+ is formed as an end product of the degradation of organic matter, primarily by the metabolism of animals and bacteria, and is oxidized to nitrate again by nitrifying bacteria in the soil. Thus a continuous cycle exists between the nitrate in the soil and the organic nitrogen in the plants growing on it. While nearly all the ammonia in the root is usually incorporated into amino acids at the root itself, plants may transport significant amounts of ammonium ions in the xylem to be fixed in the shoots. This may help avoid the transport of organic compounds down to the roots just to carry the nitrogen back as amino acids.
Nitrogen nutrition for plants
assimilation of nitrogen in plants through nitrate and ammonia nutrition and the enzyemes envolved in the assimilation.
Chapters 18 - Amino acid Oxidation , production of urea Biochemistry
Chapters 18 - Amino acid Oxidation , production of urea Biochemistry
the link for chapter 22 : https://www.slideshare.net/arijabuhaniyeh/chapters-18-22-biochemistry-74720233
Nitrogen cycle
The document discusses nitrogen fixation and the nitrogen cycle. It notes that while nitrogen gas makes up 78% of the atmosphere, plants cannot use it directly and must obtain nitrogen from the soil in the forms of nitrates and ammonium salts. Nitrogen fixation is carried out by both biological and non-biological processes, with biological nitrogen fixation being the primary means of fixing atmospheric nitrogen in the soil through the action of nitrogen-fixing bacteria and their enzyme nitrogenase. The nitrogenase enzyme converts atmospheric nitrogen gas into ammonia through an ATP-dependent process.
Assimilation
This document defines assimilation and provides examples of it occurring in speech. It discusses how assimilation is a phonological process where sounds become more similar when next to each other. Assimilation can be regressive, with the first sound changing to match the second, or progressive, with the second sound changing to match the first. It also describes different types of assimilation including place, manner, and voicing of sounds. Exercises are provided to have the reader practice identifying assimilation in words and sentences.
Nitrogen cycle
The nitrogen cycle is a natural process in which atmospheric nitrogen enters the soil and becomes part of living organisms. It is essential to living things and plays an important role in ecosystems. The steps of the nitrogen cycle are nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification. Human activities like cultivation, harvesting, and fossil fuel use can disrupt the nitrogen cycle and cause over-supply of nitrogen in the environment, leading to issues like soil acidification and increased greenhouse gases.
Assimilation
This document discusses assimilation, which is when a phoneme is realized differently due to the influence of a neighboring phoneme. Assimilation is defined as a sound replacing or changing properties under the influence of an adjacent sound. Consonants and vowels are affected by their neighbors through assimilation. Assimilation can be regressive or progressive and involve place, voice, or manner of articulation. It typically occurs regressively except in suffixes like -s or -ed where it is progressive.
Nitrogen Cycle Powerpoint
The document summarizes the nitrogen cycle, which is a process by which nitrogen is converted between its various chemical forms and circulated among air, land, water, and living organisms. Nitrogen is essential for all life and comprises 70-71% of the atmosphere. It enters organisms through eating, drinking, and breathing and is converted to forms such as ammonium, nitrates, and urea that can be used by plants and animals. The nitrogen cycle is linked to the water cycle as nitrogen is absorbed by plants from the soil and returns to the atmosphere.
Nitrogen cycle
1. The nitrogen cycle describes how nitrogen is converted between its various forms and moves between the atmosphere, soil, plants, and animals.
2. Atmospheric nitrogen is converted to ammonia or nitrates through nitrogen fixation, which allows plants and animals to use it.
3. Nitrification and ammonification convert ammonia into other nitrogen forms that plants can use, and denitrification returns nitrogen to the atmosphere, completing the cycle.
Viewers also liked (12)
Chapters 18 - Amino acid Oxidation , production of urea Biochemistry
Chapters 18 - Amino acid Oxidation , production of urea Biochemistry
Similar to Nitrogen cycle
Nitrogen cycle.ppt
Nitrogen is a key nutrient for plants but it exists primarily as inert nitrogen gas in the atmosphere. The nitrogen cycle describes the process by which nitrogen is converted between various chemical forms as it moves between the atmosphere, soil, organisms, and various environmental reservoirs. Key steps in the nitrogen cycle include nitrogen fixation by bacteria, nitrification of ammonia to nitrites then nitrates, assimilation of nitrogen by plants and animals, ammonification of organic nitrogen waste by decomposers, and denitrification of nitrates back to nitrogen gas. The nitrogen cycle is essential for providing plants with nitrogen needed for growth while enriching soils with nutrients.
MICROBIOLOGY.pptx
The document discusses the nitrogen cycle, which is the process by which nitrogen is converted between various chemical forms through biological and physical processes. It describes the main steps in the nitrogen cycle as nitrogen fixation, ammonification, nitrification, assimilation, and denitrification. Nitrogen fixation involves converting nitrogen gas from the atmosphere into more chemically reactive forms that can be used by plants and animals through biological and industrial processes.
nitrogencycleppt-180610155137.pdf
This document provides an overview of the nitrogen cycle presented by Manisha Thakur. It discusses the key processes in the nitrogen cycle including nitrogen fixation, assimilation, ammonification, nitrification, and denitrification. Nitrogen fixation involves the conversion of nitrogen gas from the atmosphere into ammonia or organic nitrogen compounds. Assimilation is the incorporation of inorganic nitrogen into organic molecules by plants and other organisms. Ammonification and nitrification convert nitrogen waste into plant-usable inorganic forms through the action of microbes. Denitrification completes the cycle by converting nitrates back to nitrogen gas.
Nitrogen cycle
This document provides an overview of the nitrogen cycle presented by Manisha Thakur. It discusses the key processes in the nitrogen cycle including nitrogen fixation, assimilation, ammonification, nitrification, and denitrification. Nitrogen fixation involves the conversion of nitrogen gas from the atmosphere into ammonia or organic nitrogen compounds. Assimilation is the incorporation of inorganic nitrogen into organic molecules by plants and other organisms. Ammonification and nitrification convert nitrogen waste into plant-usable forms through the action of microbes. Denitrification completes the cycle by converting nitrates back to nitrogen gas. Microbes play an essential role in these transformations that circulate nitrogen between the atmosphere, lithosphere, hydrosphere and biosphere.
Nitrogen cycle aice environmental management Period 3
The nitrogen cycle describes the movement of nitrogen through the environment. Nitrogen exists in the atmosphere but is not directly usable by plants and animals. It is converted to usable forms through nitrogen fixation by lightning and bacteria. Nitrogen-fixing bacteria convert nitrogen gas into ammonia, which plants can use, and nitrifying bacteria further convert ammonia into nitrites and nitrates. Denitrifying bacteria convert nitrates back to nitrogen gas, which returns to the atmosphere. Human activities like fossil fuel combustion and excessive fertilizer use have disrupted the nitrogen cycle.
Nitrogen Cycle(N2).ppt
Nitrogen is essential for living organisms but is inert in its atmospheric form. The nitrogen cycle transforms nitrogen between its gas, organic, and inorganic forms through biological and environmental processes. These include nitrogen fixation by bacteria, ammonification by decomposers, nitrification by bacteria, and denitrification by other bacteria. The cycle is crucial for providing nitrogen to plants and recycling waste nitrogen back into usable forms and the atmosphere.
Nitrogen cycle
The nitrogen cycle describes the conversion of nitrogen between its various chemical forms through four processes: nitrogen fixation, ammonification/decay, nitrification, and denitrification. Nitrogen is essential for all life but must be processed from its abundant gas form in the atmosphere into organic compounds that plants and animals can use through nitrogen fixation. Decay and nitrification further convert nitrogen into different forms, while denitrification replenishes nitrogen gas in the atmosphere. The cycle illustrates microorganisms' key role in ecosystems and makes nitrogen biologically available while balancing its different forms.
Nitrogen cycle
The nitrogen cycle describes the conversion of nitrogen between its various chemical forms and involves both biological and non-biological processes. Key processes include nitrogen fixation by bacteria and lightning which converts atmospheric nitrogen gas into ammonia; nitrification by bacteria which converts ammonia into nitrites and nitrates; assimilation by plants which use nitrates and ammonium for growth; ammonification by decomposers which converts organic nitrogen waste into ammonia; and denitrification by bacteria which converts nitrates back into nitrogen gas. Human activities like fossil fuel combustion, agriculture, and deforestation have significantly impacted the global nitrogen cycle.
EIA.pptx
The nitrogen cycle involves the conversion of nitrogen between its various chemical forms as it circulates between the atmosphere, soil, water, and living organisms. It consists of five main processes: nitrogen fixation, nitrification, assimilation, ammonification, and denitrification. Nitrogen fixation converts atmospheric nitrogen into ammonia through lightning or by symbiotic bacteria. Assimilation involves plants and animals incorporating nitrogen compounds into their tissues. Ammonification and denitrification return nitrogen to the soil and atmosphere through decomposition.
Nitrogen cycle
The nitrogen cycle describes the biological and physical processes by which nitrogen is converted between its various chemical forms and circulates between terrestrial, marine, and atmospheric ecosystems, driven largely by microbial activity such as nitrogen fixation, nitrification, and denitrification; nitrogen is essential but scarce for biological use, and the nitrogen cycle maintains its abundance through these processes of conversion between its inert atmospheric form and bioavailable forms incorporated into living tissues.
Nitrogen and carbon cycle
The document discusses the nitrogen and carbon cycles. It provides details on the key processes in each cycle, including photosynthesis, fixation, mineralization, nutrition, and denitrification for nitrogen. For carbon, it discusses photosynthesis, decomposition, and the role of plants, animals, and soil respiration. It also compares the two cycles, noting nitrogen is involved in recycling nitrogen in ecosystems while carbon dioxide released from burning fossil fuels is contributing to global warming. The document aims to explain the essential roles of nitrogen and carbon in ecosystems.
Ecology of Environment
1) Ecological cycles recycle essential elements like carbon, oxygen, nitrogen, and water. This allows life to be sustained on Earth.
2) The document then discusses the carbon, oxygen, water, and nitrogen cycles in more detail, explaining the key processes involved in each one like photosynthesis, respiration, evaporation, fixation, and denitrification.
3) It also provides background on topics like the Chipko movement, which was a campaign to protect trees launched in India in 1973, as well as the Bhopal gas tragedy, one of the world's worst industrial disasters when a pesticide plant leaked toxic gases.
Agri micro
Microbes play a key role in biogeochemical cycles by facilitating the conversion of elements like nitrogen into biologically useful forms. The nitrogen cycle involves nitrogen fixation by bacteria, assimilation by plants, ammonification by microbes breaking down organic matter, nitrification of ammonia to nitrites and nitrates by other microbes, denitrification of nitrates back to nitrogen gas, and sedimentation of nitrogen compounds. Nitrogen is fixed from the atmosphere by lightning, industrial processes, and symbiotic and free-living bacteria, and it is then incorporated into living tissues through assimilation or converted between forms like ammonium, nitrite and nitrate by a variety of microorganisms in the soil.
cycling of nitrogen in biosphere
how nitrogen play an very very important in our environment and how it occurs that is describe in this slid . i think it is helpful for your study. thank you.
Nitrogen cycle by Himanshu Asati
Biogeochemical Cycle in environment. Various Forms of Nitrogen in our ecosystem. Microbes plays important role in nitrogen cycle.
Nitrogen cycle PERIOD 4
The nitrogen cycle describes the natural processes by which nitrogen is converted between its various chemical forms and circulates between living organisms and the environment. Key processes include nitrogen fixation by bacteria, nitrification, ammonification, and denitrification. Humans impact the nitrogen cycle through activities like fossil fuel combustion and the widespread use of nitrogen-based fertilizers, which can introduce excess nitrogen into ecosystems and cause problems like eutrophication. More developed countries tend to introduce more nitrogen through industry and transportation, while less developed countries' impacts come more from agriculture and large populations.
NITROGEN FIXATION IN PLANTS.pptx
This document discusses nitrogen fixation in plants, specifically alfalfa. It describes how nitrogen exists in the atmosphere, mostly as N2, which plants cannot use directly. It then discusses how nitrogen is essential for plant growth and metabolism. The document outlines two types of nitrogen fixation - biological and non-biological. Biological fixation is further divided into symbiotic and non-symbiotic types. Much of the document focuses on symbiotic nitrogen fixation between leguminous plants and rhizobia bacteria, including the formation of root nodules and nodulation factors.
8.2, Bio-transformation and geochemical cycle
This document provides an overview of the nitrogen cycle through four main processes:
1) Nitrogen fixation converts atmospheric nitrogen to ammonia through lightning, industrial fixation, or biological fixation by nitrogen-fixing bacteria.
2) Ammonification converts organic nitrogen sources into ammonium via bacteria.
3) Nitrification converts ammonium to nitrite and then nitrate through two steps with nitrifying bacteria.
4) Denitrification returns nitrogen to the atmosphere as nitrogen gas, closing the cycle, through denitrifying bacteria using nitrates instead of oxygen.
Nitrogen cycle
The document summarizes the nitrogen cycle. It describes the key steps:
1) Nitrogen fixation converts nitrogen gas to ammonia through diazotroph bacteria.
2) Nitrification converts ammonia to nitrites and nitrates through nitrifying bacteria.
3) Plants and animals assimilate nitrates and ammonia for growth.
4) Decomposition returns nitrogen to the soil as ammonium through ammonification.
5) Denitrification releases nitrogen back to the atmosphere through soil bacteria.
Human activities like deforestation and fertilizer use can disturb nitrogen cycles and negatively impact the environment through acid rain, global warming, and pollution.
Ecology ecosystem
The document summarizes the nitrogen cycle, which is the biogeochemical process by which nitrogen is converted between different chemical forms and moves through ecosystems. Key points include: (1) nitrogen is essential for life but most organisms cannot use atmospheric nitrogen, (2) microorganisms drive five processes - fixation, uptake, mineralization, nitrification, and denitrification - that convert nitrogen into biologically available forms, and (3) human activity such as fertilizer use has increased nitrogen fixation and altered the global nitrogen cycle, with environmental consequences like water pollution and coastal eutrophication.
Similar to Nitrogen cycle (20)
Nitrogen cycle aice environmental management Period 3
Nitrogen cycle aice environmental management Period 3
Recently uploaded
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
Overview of the Global Peatlands Assessment
Presented by Patrick Scheel at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(Newcastle毕业证书)纽卡斯尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland managementGlobal Landscapes Forum (GLF)
Presented by Jan Peters at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and ActionPeatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge EducationGlobal Landscapes Forum (GLF)
Presented by Feri Johana at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyWildlife-AnIntroduction.pdf so that you know more about our environment
All about wildlife, if you are fond of animals and wildlife then do follow us for more content like this
Peatlands of Latin America and the Caribbean
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...Global Landscapes Forum (GLF)
Presented by Sonya Dewi at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Epcon is One of the World's leading Manufacturing Companies.
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Promoting Multilateral Cooperation for Sustainable Peatland management
Presented by Agus Julianto on GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably
Global Peatlands Map and Hotspot Explanation Atlas
Presented by Alexandra Barthelmes at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
Climate Change All over the World .pptx
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
Recycling and Disposal on SWM Raymond Einyu pptx
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
Recently uploaded (20)
world-environment-day-2024-240601103559-14f4c0b4.pptx
world-environment-day-2024-240601103559-14f4c0b4.pptx
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland management
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Wildlife-AnIntroduction.pdf so that you know more about our environment
Wildlife-AnIntroduction.pdf so that you know more about our environment
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Epcon is One of the World's leading Manufacturing Companies.
Epcon is One of the World's leading Manufacturing Companies.
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...
Promoting Multilateral Cooperation for Sustainable Peatland management
Promoting Multilateral Cooperation for Sustainable Peatland management
Global Peatlands Map and Hotspot Explanation Atlas
Global Peatlands Map and Hotspot Explanation Atlas
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Nitrogen cycle
- 2. Nitro • an essential part of the amino acids. It is a basic element of life. Cyclegen n + es‘‘nitre forming’’ • composes about four-fifths (78.03 percent) by volume of the atmosphere. •in the form of protein is an important constituent of animal tissue. • is an important element in plant nutrition.•is inert and serves as a diluent for oxygen in burning and respiration processes.
- 3. Nitrogen Cycle • natural cyclic process in the course of which atmospheric nitrogen enters the soil and becomes part of living organisms
- 4. Importance of Nitrogen Cycle • essential to living organisms and its availability plays a crucial role in the organization and functioning of the world's ecosystems • key factor controlling the nature and diversity of plant life • vital ecological processes such as plant productivity and the cycling of carbon and soil minerals
- 5. Steps of Nitrogen Cycle • Nitrogen Fixation • Nitrogen Assimilation • Ammonification • Nitrification • Denitrification
- 6. Nitrogen Fixation • nitrogen gas is converted into inorganic nitrogen compounds. It is mostly (90 percent) accomplished by free-living, nitrogen-fixing bacteria.
- 7. Nitrogen-Fixing Bacteria • symbiotic bacteria living on the roots of plants (mostly legumes and alders) • cyanobacteria (formerly known as blue- green algae) • archaebacteria (also known as archaea) in deep-sea hydrothermal vents
- 8. Nitrogen Fixation by Haber-Bosch Process • method of directly synthesizing ammonia from hydrogen and nitrogen, developed by the German physical chemist Fritz Haber.
- 9. Nitrogen Fixation by Lightning • The high energies provided by lightning and cosmic radiation serve to combine atmospheric nitrogen and oxygen into nitrates, which are carried to the Earth’s surface in precipitation.
- 10. Steps of Nitrogen Cycle • Nitrogen Fixation • Nitrogen Assimilation • Ammonification • Nitrification • Denitrification
- 11. Nitrogen Assimilation • are assimilation of nitrates and ammonia resulting from nitrogen fixation into the specific tissue compounds of algae and higher plants. Animals then ingest these algae and plants, converting them into their own body compounds.
- 12. Steps of Nitrogen Cycle • Nitrogen Fixation • Nitrogen Assimilation • Ammonification • Nitrification • Denitrification
- 13. Ammonification • The remains of all living things—and their waste products—are decomposed by microorganisms which yields ammonia.
- 14. Steps of Nitrogen Cycle • Nitrogen Fixation • Nitrogen Assimilation • Ammonification • Nitrification • Denitrification
- 15. Nitrification • a process carried out by nitrifying bacteria, transforms soil ammonia into nitrates, which plants can incorporate into their own tissues.
- 16. Steps of Nitrogen Cycle • Nitrogen Fixation • Nitrogen Assimilation • Ammonification • Nitrification • Denitrification
- 17. Denitrification • The process where nitrates are metabolized by denitrifying bacteria to free nitrogen and returned to the atmosphere
- 18. Human Intrusion and Its Effects Declination of nitrogen in the soil • cultivation of croplands • harvesting of crops • cutting of forests
- 19. Human Intrusion and Its Effects Over supply of Nitrogen • the production and use of nitrogen fertilizers • burning of fossil fuels in automobiles, power generation plants, and industries
- 20. Human Intrusion and Its Effects Over supply of Nitrogen • the leaching of nitrogen from over fertilized croplands, • animal wastes and sewage
- 21. Effects of Over Supply of Nitrogen • substantial acidification of soils and of the waters of streams and lakes • acid rain • Increased global concentrations of nitrous oxide (N2O), a potent greenhouse gas,
- 22. Effects of Over Supply of Nitrogen • stratospheric ozone depletion • greatly increased transport of nitrogen by rivers into estuaries and coastal waters where it is a major pollutant.
- 23. References • http://www.bbc.co.uk/schools/gcsebitesize/science/21c/food/naturalp olymersrev3.shtml • http://www.epa.gov/owow/watershed/wacademy/acad2000/nitroabstr. html • Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved. • nitrogen cycle. (2010). In Encyclopædia Britannica. Retrieved September 02, 2010, from Encyclopædia Britannica Online: http://www.britannica.com/EBchecked/topic/416271/nitrogen- cycle • Haber-Bosch process. (2010). Encyclopædia Britannica. Encyclopaedia Britannica Ultimate Reference Suite. Chicago: Encyclopædia Britannica.