What Is The Right Way To Assess Students
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The document summarizes various forms of pollution affecting the Perm Territory in Russia, including air, water, soil, and waste pollution. Factories release large amounts of toxic substances into the air and waterways each year, contaminating the environment. The main pollutants are methane, nitrogen, sulfur, carbon oxide, mineral oils, phenols, copper, and manganese. Poor waste management practices and outdated industrial technologies are the primary causes of the region's deteriorating ecological conditions. Failure to address these issues will have dire consequences for both human and environmental health in the Perm Territory.
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English 5 beta
This document discusses various types of pollution and environmental degradation that can result from unplanned development and mismanagement of ecosystems, including soil erosion, deforestation, water pollution, air pollution, acid rain, noise pollution, and ozone depletion. It provides examples of sources for each type of pollution and their impacts. Proper management is needed through laws, technology, education, preservation, conservation, biological control, renewable energy and efficient energy use to address these issues.
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Air pollution is a condition in which there is a considerable measure of contaminants in it including particulate issue, organic materials, or chemicals. Those contaminants can prompt medical issue for us. Likewise, it can harm nature and the air.
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Acid rain is formed when sulfur and nitrogen oxides from human sources like power plants and vehicles combine with water in the air to form acids. These acids can damage the environment when they fall to the ground as rain or snow. Effects include sterilized soil, decreased plant growth, and damaged infrastructure. While natural phenomena also emit these chemicals, human activity since the Industrial Revolution has increased their levels and spread the problem regionally and globally. Proposed solutions include installing pollution controls on power plants, reducing sulfur in fuels, expanding electric transport, and international agreements to limit emissions.
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It is a description about the problems and causes of a ''village of cancer'' in Vietnam due to environmental pollution from industry.
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Water pollution is a major problem in Indonesia, impacting rivers, lakes, and seas. The main causes are human activities like domestic and industrial waste, as well as deforestation and erosion. Two case studies of highly polluted rivers are the Citarum River in West Java and Siak River in Riau Province. Eutrophication from excess nutrients is a significant issue for reservoirs on the Citarum River. Other cases of severe pollution have occurred in Southeast Asian seas and the Timor Sea in Indonesia from oil spills. While laws and regulations exist, enforcement remains a challenge, and polluters often face few consequences.
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The document discusses different types of environmental contamination including water, atmosphere, and soil pollution. It notes that water pollution is caused by wastewater from households, industries and agriculture containing sewage, urine and waste. Atmospheric pollution results from emissions of sulfur and nitrogen compounds which can lead to acid rain and ozone depletion. Soil contamination occurs from chemical spills, waste dumping, and landfill leaching. All of these forms of pollution can negatively impact food supply and human health.
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The document discusses air pollution and its causes. It states that air is composed of 78% nitrogen, 21% oxygen and 1% other gases like carbon dioxide. It also notes that air over cities is contaminated with harmful gases from vehicle exhaust, factory emissions, and other sources. Major air pollutants are said to include sulfur dioxide, nitrogen oxides, carbon monoxide and particulate matter. The document outlines some of the health and environmental impacts of air pollution.
Acid rain its Causes and Effects
This document discusses acid rain, including its types, causes, formation, effects, and prevention. It defines acid rain as precipitation with acidic components from sulfuric or nitric acid in the atmosphere. The two types are wet deposition through rain/snow and dry deposition through acidic gases. The main causes are human emissions of sulfur dioxide and nitrogen oxides from burning fossil fuels, as well as natural causes like volcanoes and lightning. The effects of acid rain are damage to infrastructure, increased health issues, harm to aquatic life and soils, and damage to trees. Prevention methods include cleaner combustion, pollution controls, and using alternative energy sources to coal.
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This document discusses various types of pollution and environmental degradation that can result from unplanned development and mismanagement of ecosystems, including soil erosion, deforestation, water pollution, air pollution, acid rain, noise pollution, and ozone depletion. It provides examples of sources for each type of pollution and their impacts. Proper management is needed through laws, technology, education, preservation, conservation, biological control, renewable energy and efficient energy use to address these issues.
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Air pollution is a condition in which there is a considerable measure of contaminants in it including particulate issue, organic materials, or chemicals. Those contaminants can prompt medical issue for us. Likewise, it can harm nature and the air.
Acid Rain1
Acid rain is formed when sulfur and nitrogen oxides from human sources like power plants and vehicles combine with water in the air to form acids. These acids can damage the environment when they fall to the ground as rain or snow. Effects include sterilized soil, decreased plant growth, and damaged infrastructure. While natural phenomena also emit these chemicals, human activity since the Industrial Revolution has increased their levels and spread the problem regionally and globally. Proposed solutions include installing pollution controls on power plants, reducing sulfur in fuels, expanding electric transport, and international agreements to limit emissions.
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It is a description about the problems and causes of a ''village of cancer'' in Vietnam due to environmental pollution from industry.
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Water pollution is a major problem in Indonesia, impacting rivers, lakes, and seas. The main causes are human activities like domestic and industrial waste, as well as deforestation and erosion. Two case studies of highly polluted rivers are the Citarum River in West Java and Siak River in Riau Province. Eutrophication from excess nutrients is a significant issue for reservoirs on the Citarum River. Other cases of severe pollution have occurred in Southeast Asian seas and the Timor Sea in Indonesia from oil spills. While laws and regulations exist, enforcement remains a challenge, and polluters often face few consequences.
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The document discusses different types of environmental contamination including water, atmosphere, and soil pollution. It notes that water pollution is caused by wastewater from households, industries and agriculture containing sewage, urine and waste. Atmospheric pollution results from emissions of sulfur and nitrogen compounds which can lead to acid rain and ozone depletion. Soil contamination occurs from chemical spills, waste dumping, and landfill leaching. All of these forms of pollution can negatively impact food supply and human health.
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The document discusses air pollution and its causes. It states that air is composed of 78% nitrogen, 21% oxygen and 1% other gases like carbon dioxide. It also notes that air over cities is contaminated with harmful gases from vehicle exhaust, factory emissions, and other sources. Major air pollutants are said to include sulfur dioxide, nitrogen oxides, carbon monoxide and particulate matter. The document outlines some of the health and environmental impacts of air pollution.
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This document discusses acid rain, including its types, causes, formation, effects, and prevention. It defines acid rain as precipitation with acidic components from sulfuric or nitric acid in the atmosphere. The two types are wet deposition through rain/snow and dry deposition through acidic gases. The main causes are human emissions of sulfur dioxide and nitrogen oxides from burning fossil fuels, as well as natural causes like volcanoes and lightning. The effects of acid rain are damage to infrastructure, increased health issues, harm to aquatic life and soils, and damage to trees. Prevention methods include cleaner combustion, pollution controls, and using alternative energy sources to coal.
Industrial and mining pollution and its effects final
Industrial and mining activities cause significant pollution that affects both the environment and human health. Industrial pollution emits various gases and hazardous effluents that contaminate air, water, and soil. This pollution has led to issues like global warming, damage to agriculture, and industrial disasters like the Bhopal gas tragedy. Long-term exposure to industrial pollutants can cause respiratory illnesses and increased risk of cancer. Mining pollution generates large amounts of waste and contaminates water sources with toxic heavy metals. Surface mining techniques severely damage landscapes and ecosystems, while underground mining exposes workers to coal dust and other respiratory hazards. Both industrial and mining pollution threaten human health and the environment on a large scale.
Environmental Pollution - Causes, Effects and Control Measures
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Lecturer / Civil
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Pollution is the introduction of contaminants into the natural environment that cause adverse changes. There are three main types of pollution: air, water, and land pollution. Air pollution occurs when harmful substances are added to the air, affecting human health and contributing to issues like climate change. Water pollution happens when toxic substances contaminate bodies of water, threatening biodiversity, food safety, and access to clean water. Land pollution deteriorates the earth's surfaces through the accumulation of solid and liquid waste in soil and groundwater, endangering habitats, water quality, and public health.
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Air pollution refers to contamination of the air indoors or outdoors by harmful gases, dust, or smoke. It occurs when substances enter the atmosphere and make it difficult for plants, animals, and humans to survive by making the air dirty. Major causes of air pollution include burning fossil fuels for energy and transportation, agricultural activities, exhaust from factories and industries, and mining operations. The effects of air pollution are severe and include respiratory and heart problems, global warming, acid rain, eutrophication of water bodies, and damage to wildlife. Urgent action is needed to control air pollution and mitigate its harmful impacts.
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This document discusses water pollution, its sources, effects, and control measures. It defines water pollution as the contamination of water bodies that occurs when pollutants are directly or indirectly discharged without adequate treatment. Water pollution affects the entire biosphere and damages plant and animal species and communities. The major sources of water pollution include industrial waste, sewage, mining, oil spills, agricultural runoff, and urban development. Water pollution is measured through physical, chemical, and biological indicators and can cause diseases in humans and harm aquatic animals. Control measures involve regulating industries, wastewater treatment, public education, and research.
Science pptx on our environment
Our environment consists of all living and non-living things that surround us, including plants, air, animals, water, and land, which all interact with and depend on each other to form ecosystems. However, human actions have disturbed this balance by polluting the air, water, soil, and increasing noise levels. The different types of pollution include air pollution from smoke and fumes, water pollution from toxic chemicals from industries, soil pollution from overuse of fertilizers and pesticides, and noise pollution from vehicles and loud music. All of these forms of pollution negatively impact both human and environmental health.
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Environmental Pollution can be defined as any undesirable change in physical, chemical, or biological characteristics of any component of the environment i.e. air, water, soil which can cause harmful effects on various forms of life or property.
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Industrial and mining pollution and its effects final
Industrial and mining activities cause significant pollution that affects both the environment and human health. Industrial pollution emits various gases and hazardous effluents that contaminate air, water, and soil. This pollution has led to issues like global warming, damage to agriculture, and industrial disasters like the Bhopal gas tragedy. Long-term exposure to industrial pollutants can cause respiratory illnesses and increased risk of cancer. Mining pollution generates large amounts of waste and contaminates water sources with toxic heavy metals. Surface mining techniques severely damage landscapes and ecosystems, while underground mining exposes workers to coal dust and other respiratory hazards. Both industrial and mining pollution threaten human health and the environment on a large scale.
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by
M.Shanmugaraj M.E.,
Lecturer / Civil
V.S.V.N. Polytechnic College,
Virudhunagar, Tamil Nadu, India
Pollution
Pollution is the introduction of contaminants into the natural environment that cause adverse changes. There are three main types of pollution: air, water, and land pollution. Air pollution occurs when harmful substances are added to the air, affecting human health and contributing to issues like climate change. Water pollution happens when toxic substances contaminate bodies of water, threatening biodiversity, food safety, and access to clean water. Land pollution deteriorates the earth's surfaces through the accumulation of solid and liquid waste in soil and groundwater, endangering habitats, water quality, and public health.
Citarum River Presentation
This document summarizes information about the Citarum River in Indonesia. It provides background on the river being one of the largest in West Java and a source of life that is now considered one of the most polluted rivers. Urbanization, textile industries and other factories dumping waste are causing increasing heavy metal pollution which is negatively impacting the fish populations and people's health. The Asian Development Bank has approved a $500 million loan for a 15-year clean up plan, but factories continue to pollute the river.
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Air pollution is the introduction of harmful substances into the atmosphere, which can cause health issues and environmental damage. It is caused by the burning of fossil fuels like coal and petroleum, which release nitrogen, sulfur, and particulate matter. This can produce smog and acid rain. Regular inhalation of these polluted air can increase risks of diseases like asthma, COPD, and lung cancer. Governments have made efforts to reduce sulfur dioxide emissions with some success, but air pollution remains a threat, especially to children and the elderly. Reduction efforts include embracing cleaner transportation, fuels, production, and increasing green spaces.
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The document discusses water pollution and provides details about various types of water pollutants and their sources. It summarizes that water pollution occurs when foreign materials contaminate water supplies, harming living things. The major types of water pollutants are biological impurities like bacteria, inorganic impurities such as heavy metals, and organic impurities including pesticides. Pollution comes from natural sources like volcanic eruptions and human sources such as sewage, industrial waste, and agricultural runoff. Water pollution harms ecosystems, animal health, and human health by causing diseases and environmental damage. Several major rivers around the world are severely polluted due to waste dumping and lack of treatment, including the Mississippi, Ganges, and Yellow Rivers
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This document discusses various types of pollution and their effects on human health. It defines pollution and related terms, and identifies the major types of pollution as water, air, soil, thermal, radioactive, noise, and light. It then focuses on water pollution and air pollution, describing common pollutants such as sewage, sediments, nutrients, and effluents that contaminate waterways, as well as ozone, carbon monoxide, sulfur dioxide, and nitrogen dioxide that are released into the air through natural events and human activities like industry and vehicle emissions. The document stresses that pollution poses health risks and can cause respiratory, cardiovascular and other illnesses.
Air pollution
Air pollution refers to contamination of the air indoors or outdoors by harmful gases, dust, or smoke. It occurs when substances enter the atmosphere and make it difficult for plants, animals, and humans to survive by making the air dirty. Major causes of air pollution include burning fossil fuels for energy and transportation, agricultural activities, exhaust from factories and industries, and mining operations. The effects of air pollution are severe and include respiratory and heart problems, global warming, acid rain, eutrophication of water bodies, and damage to wildlife. Urgent action is needed to control air pollution and mitigate its harmful impacts.
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This document discusses water pollution, its sources, effects, and control measures. It defines water pollution as the contamination of water bodies that occurs when pollutants are directly or indirectly discharged without adequate treatment. Water pollution affects the entire biosphere and damages plant and animal species and communities. The major sources of water pollution include industrial waste, sewage, mining, oil spills, agricultural runoff, and urban development. Water pollution is measured through physical, chemical, and biological indicators and can cause diseases in humans and harm aquatic animals. Control measures involve regulating industries, wastewater treatment, public education, and research.
Science pptx on our environment
Our environment consists of all living and non-living things that surround us, including plants, air, animals, water, and land, which all interact with and depend on each other to form ecosystems. However, human actions have disturbed this balance by polluting the air, water, soil, and increasing noise levels. The different types of pollution include air pollution from smoke and fumes, water pollution from toxic chemicals from industries, soil pollution from overuse of fertilizers and pesticides, and noise pollution from vehicles and loud music. All of these forms of pollution negatively impact both human and environmental health.
Marine pollution
Marine pollution is caused by human activities that introduce waste into the ocean directly or indirectly. Waste enters the ocean through pipes discharging municipal waste and sewage, agricultural runoff of pesticides and fertilizers, petroleum and oils washed from roads into waterways, offshore oil extraction and accidents that release toxic substances from ships. This pollution reduces oxygen levels in the water, releases toxic compounds, and harms marine life through effects like clogging gills or reducing birds' ability to regulate body temperature. Treatment plants can help by removing waste and reducing pollution load through primary, secondary, and advanced treatment methods.
Men's impact on the environment
The document discusses various types of pollution caused by human activities that are degrading the environment and threatening natural resources. It describes pollution of soil from agriculture and waste, pollution of water from industrial, agricultural and domestic waste, and air pollution from industry and vehicles. Consequences include threats to water quality, health, and climate change. The document also warns that overexploitation of natural resources like water, food, fossil fuels, metals and forests risks their extinction, endangering the planet.
Water pollution
This document discusses water pollution, its sources, effects, and prevention. It outlines various sources of water pollution including natural sources like erosion and volcanic activity, as well as human sources such as domestic, industrial, agricultural, and oil pollution. Domestic pollution comes from sewage, food waste, and chemicals. Industrial pollution includes inorganic waste from factories. Agricultural pollution is caused by excess fertilizers and pesticides. Oil pollution results from offshore drilling and tanker operations. Water pollution leads to aquatic animal deaths, disrupted ecosystems, and waterborne diseases. Prevention methods include reducing water usage, proper waste disposal, and public education. Strict adherence to water laws and changing household habits can help control pollution.
Environmental pollution and control
Environmental Pollution can be defined as any undesirable change in physical, chemical, or biological characteristics of any component of the environment i.e. air, water, soil which can cause harmful effects on various forms of life or property.
Water pollution
Water pollution is one of the most serious environmental problems as life depends on water but many sources are now contaminated. While there is plenty of water on Earth, much of it is not drinkable due to pollution from factories, plants, and dumping of industrial and nuclear waste into rivers, lakes, and oceans. This pollution reduces oxygen in the water, killing fish and other aquatic animals and forcing others from their habitats. To survive, people must solve this growing problem of contaminated water sources quickly in order to have access to the clean water necessary for health.
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This document discusses water pollution, its causes, and methods for managing it. It begins with an introduction defining water pollution and its sources. It then covers the nature of different pollutants and why water management is needed. Methods for measuring pollution like BOD, COD, and detecting pathogens are described. The document outlines water treatment processes including preliminary, primary, secondary, and tertiary treatments. It discusses India's water pollution management and regulations. Finally, it highlights innovations by Indians to reduce pollution like using hair to absorb oil, floating wetlands, and technologies to treat sewage and inspect pipelines.
Surface water pollution
This document discusses various types of water pollutants including pathogens from sewage, organic waste from industrial and agricultural activities, chemical pollutants from industry and mining, excess sediments, and excess nutrients that can cause eutrophication. It provides examples of point source pollutants from factories and non-point source pollutants from agricultural runoff and urban areas. Prevention methods include reducing water usage, properly disposing of household waste, and minimizing the use of fertilizers and pesticides.
Lake Ülemiste
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The document summarizes Emma Creighton's explorative design for free play. It discusses moving away from structured play toward more free, physical, social play inspired by today's technology. The design involved research, a focus, prototyping a "jogo design" to encourage exploratory, visual, object, sound and game based play. The document lists several references for further reading on play and recommends contacting the author or visiting online profiles for more information.
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The document discusses the importance of play for children and adults. It explores how technology can both help and hinder play. The author proposes designing an interactive toy or game using new technologies to facilitate play for all ages in a way that is inspired by both traditional play and modern computer games. The project would aim to change conventional views of play through user studies and an outcome that blends physical and digital play.
Ivan Aivazovskiy
Ivan Aivazovsky was an Armenian painter known for his seascapes. He was born into poverty but found international fame at age 25 after graduating from the St. Petersburg Academy of Arts. Aivazovsky produced over 6,000 paintings in his lifetime, primarily depicting seascapes from Crimea, the Caucasus, Armenia, and Georgia. One of his most famous works is "The Ninth Wave" from 1850, which depicts a group of shipwrecked survivors clinging to debris in stormy seas as a massive wave approaches, conveying the power and tragedy of the sea.
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The India Vision Foundation celebrated its 20th anniversary in 2013-14. The Foundation was started by Dr. Kiran Bedi after she received the Ramon Magsaysay Award for her work improving police-public relations in India. The Foundation focuses on empowering vulnerable groups through education, skills development, rural development, e-learning, and grievance redressal programs. It provides daycare, education, vocational training and life skills programs for prison inmates and their families to help with rehabilitation. It also works on community development programs in rural areas and programs to improve police-public relations through its "Mission Safer India" and "India Police" initiatives.
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Power generating units require huge capital investment and natural resources like fossil fuels and large amounts of water, causing significant environmental and health impacts. Several thermal power projects in Karnataka were identified for private sector participation. Coal-fired power plants emit various pollutants like carbon dioxide, sulfur and nitrogen oxides, mercury, and particulate matter. Fly ash from these plants contains toxic heavy metals that can pollute water and soil if not properly disposed of. The impacts of coal-fired power plants on local communities, wildlife and the environment need to be carefully considered. Alternative clean energy sources like hydropower, solar and wind could help reduce these impacts.
Ill effects-of-thermal-power-plants3199
Power generating units require huge capital investment and natural resources like fossil fuels and large amounts of water, causing significant environmental and health impacts. Several thermal power projects in Karnataka were identified for private sector participation. Coal-fired power plants emit various pollutants like carbon dioxide, sulfur and nitrogen oxides, mercury, and particulate matter. Fly ash from these plants contains toxic heavy metals that can pollute water and soil if not properly disposed of. The impacts of coal-fired power plants on local communities, wildlife and the environment need to be carefully considered. Alternative clean energy sources like hydropower, solar and wind could help reduce these impacts.
Pollution and its types
This document discusses various types of pollution including air, water, noise, and land pollution. It provides examples and causes of each type as well as methods for prevention. The document also discusses atmospheric chemical compositions and the impacts of agriculture on water pollution. It notes that agricultural practices are a leading cause of water pollution through nutrient runoff and erosion. The document concludes by explaining the two main sources of water pollution are point sources, which can be traced to a location, and non-point sources, which are more diffuse such as runoff from farms and construction sites.
What is Pollution?
I didn't put some effects on it because it was really a rush file. What is Pollution? What is Pollutant? Ecological View of Pollution? What are the types of Pollution?
Pollution
The presentation includes: What is Pollution? What is pollutant? An ecological view of pollution, What are the types of pollution?
PROJECT.pptx
This document discusses different types of pollution including air, water, land, and noise pollution. It provides causes and effects of each type of pollution. The key sources of each type of pollution are burning fossil fuels, vehicles, industries, agriculture, mining, construction, and waste dumping. Air pollution causes diseases, global warming, acid rain, and ozone layer depletion. Water pollution affects biodiversity, food chains, and human health. Land pollution impacts climate, soil quality, and can cause respiratory issues. Noise pollution has physical and psychological effects and disrupts sleep. The major sources named for each type of pollution are vehicles, industries, agriculture, mining, construction, and waste.
ENVIRONMENTAL HAZARDS.pptx
This document summarizes various environmental hazards and laws related to air and water pollution. It discusses the different types of air pollutants including primary and secondary pollutants. Major causes of air pollution are outlined such as industrial emissions, vehicular exhaust and agricultural burning. Effects of air pollution on human health, plants and materials are also mentioned. Common water pollutants and causes such as industrial, domestic and agricultural waste are summarized. Key environmental laws in India including the Environment Protection Act, Air and Water Pollution Control Acts are briefly described.
Water pollution
This document discusses various types of water pollutants including pathogens from sewage, organic waste from industrial and agricultural runoff, chemical pollutants from industry and mining, excess sediments, and excess nutrients that can cause eutrophication. It provides examples of point source pollution from factories and non-point source pollution from agricultural runoff and urban areas. Prevention methods include reducing water usage, proper disposal of household chemicals, minimizing fertilizer and pesticide use, and cleaning up litter.
Water pollution
The document discusses water and environmental issues in the Gaza Strip. It provides background on Gaza's geography and climate. It then discusses several types of water pollution problems facing Gaza, including water table lowering, depletion, subsidence, saltwater intrusion, and chemical contamination. It outlines various sources of water pollution like wastewater, industrial waste, sewage, oil, and nuclear waste. It also discusses impacts of pollution like toxic water and diseases. Tables show high levels of chloride and nitrates in Gaza's wells above WHO standards. The document stresses the importance of ensuring safe drinking water and solutions to Gaza's water quality problems.
Aakash raj
Environmental Pollution can be defined as any undesirable change in physical, chemical, or biological characteristics of any component of the environment i.e. air, water, soil which can cause harmful effects on various forms of life or property.
Pollution: The term pollution can be defined as influence of any substance causing nuisance, harmful effects, and uneasiness to the organisms
Pollutant:- Any substance causing Nuisance or harmful effects or uneasiness to the organisms, then that particular substance may be called as the pollutant.
WATER POLLUTION
AIR POLLUTION
LAND and SOIL POLLUTION
MARIN POLLUTION
NOISE POLLUTION
THERMAL POLLUTION
NUCLEAR HAZARDS
Water Pollution can be defined as alteration in physical, chemical, or biological characteristics of water through natural or human activities and making it unsuitable for its designated use.
Fresh Water present on the earth surface is put to many uses. It is used for drinking, domestic and municipal uses, agricultural, irrigation, industries, navigation, recreation. The used water becomes contaminated and is called waste water.
Similar to What Is The Right Way To Assess Students (20)
environmental pollution, water pollution , air pollution
environmental pollution, water pollution , air pollution
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What Is The Right Way To Assess Students
- 1. Perm Nature Is In Danger This fragile nature cries for your help
- 2. The Perm Territory is one of the main industrial centres in Russia. More than 500 factories and plants of different types are located here. Annually machine-building, chemical, fuel, woodworking, pulp and paper industries successfully release a large amount of production providing the Territory with the goods of vital necessity and making a sufficient contribution to the development of Russian economics. But each day every factory leaves so many poisonous wastes that the city almost drowns in it. Year by year the Territory turns in a very dangerous zone to live in.
- 7. ACCUMULATION OF CONSUMPTION WASTES (SOIL POLLUTION) The accumulation of solid wastes is one of the most acute and complicated ecological problems of the Perm Territory. The industrial and consumption wastes have made up the amount of more than 670 tons.
- 9. CONCLUSION If we don’t start today, tomorrow it will be too late! In the Perm Territory by the human’s side many animals and birds live and a lot of plants grow which are already in the Red Book. These creatures also need some place to live, air to breathe and water to drink . Let us save the nature from its sufferings and keep it for the future generations!