The document discusses food chains and food webs. It defines key terms like ecosystem, habitat, population, community, food chain, and food web. It provides examples of food chains like grass-springbok-cheetah. A food web shows how different food chains are interlinked, with herbivores serving as food for various predators, carnivores and omnivores. Decomposers play an important role in food webs by recycling nutrients from dead plants and animals back into the soil.
A food chain depicts a linear pathway of organisms transferring energy as one organism eats another. A food web illustrates a more complex network of interconnected food chains within an ecosystem. An energy pyramid visually represents the decrease in biomass and increase in trophic levels from producers to primary, secondary and tertiary consumers.
This presentation summarizes the major concepts about interactions of organisms while highlighting the ecosystem, competition, symbiosis and the ecological niche.
A food chain shows how energy flows between organisms as one organism eats another. A food web shows multiple interconnected food chains within an ecosystem. Producers like plants use sunlight to make their own food, while consumers eat other organisms and decomposers break down dead organisms. Energy is lost at each transfer between trophic levels according to the 10% law.
A food chain describes how energy passes from one organism to another. Producers like plants get energy from the sun, consumers eat producers or other consumers, and decomposers break down waste. A food chain shows a single path of energy transfer, while a more complex food web links multiple food chains together as predators can have multiple prey.
Food chain and Food Web
Food chain and food web in ecosystem
Food chain
Types of food chains
1. Grazing food chain
2. Detritus food chain
Food web
Significance of food chain and food web
This document provides information about food chains. It begins by defining a food chain as a sequence of organisms through which energy flows as each organism obtains energy from the one below it in the chain. Producers, such as plants, are at the bottom of the food chain as they can produce their own food. Herbivores, as primary consumers, eat the producers. Carnivores eat herbivores or other carnivores. Omnivores both eat plants and other animals. Decomposers, like fungi and bacteria, break down waste and dead organisms, recycling nutrients in the ecosystem. The document includes examples of food chains and defines the roles of producers, consumers, and decomposers. It also
The document discusses biodiversity from several perspectives:
- It defines biodiversity as the variety of life on Earth, including genetic, species, and ecosystem diversity.
- Biodiversity is the result of billions of years of evolution but is now seriously threatened by human activities like habitat loss and climate change.
- Maintaining biodiversity is important for ecological, economic, and moral reasons, and countries have legal obligations to protect biodiversity.
This document discusses biodiversity, including its definition, distribution, and evolution. It defines biodiversity as the total variation of life at all levels of biological organization, from genes to ecosystems. Biodiversity is highest in tropical regions like rainforests and tends to decrease further from the equator. Several mass extinction events have occurred throughout Earth's history, notably including the Permian-Triassic event 251 million years ago. While biodiversity has generally increased over time, the current Holocene extinction caused by humans threatens to reduce it.
A food chain depicts a linear pathway of organisms transferring energy as one organism eats another. A food web illustrates a more complex network of interconnected food chains within an ecosystem. An energy pyramid visually represents the decrease in biomass and increase in trophic levels from producers to primary, secondary and tertiary consumers.
This presentation summarizes the major concepts about interactions of organisms while highlighting the ecosystem, competition, symbiosis and the ecological niche.
A food chain shows how energy flows between organisms as one organism eats another. A food web shows multiple interconnected food chains within an ecosystem. Producers like plants use sunlight to make their own food, while consumers eat other organisms and decomposers break down dead organisms. Energy is lost at each transfer between trophic levels according to the 10% law.
A food chain describes how energy passes from one organism to another. Producers like plants get energy from the sun, consumers eat producers or other consumers, and decomposers break down waste. A food chain shows a single path of energy transfer, while a more complex food web links multiple food chains together as predators can have multiple prey.
Food chain and Food Web
Food chain and food web in ecosystem
Food chain
Types of food chains
1. Grazing food chain
2. Detritus food chain
Food web
Significance of food chain and food web
This document provides information about food chains. It begins by defining a food chain as a sequence of organisms through which energy flows as each organism obtains energy from the one below it in the chain. Producers, such as plants, are at the bottom of the food chain as they can produce their own food. Herbivores, as primary consumers, eat the producers. Carnivores eat herbivores or other carnivores. Omnivores both eat plants and other animals. Decomposers, like fungi and bacteria, break down waste and dead organisms, recycling nutrients in the ecosystem. The document includes examples of food chains and defines the roles of producers, consumers, and decomposers. It also
The document discusses biodiversity from several perspectives:
- It defines biodiversity as the variety of life on Earth, including genetic, species, and ecosystem diversity.
- Biodiversity is the result of billions of years of evolution but is now seriously threatened by human activities like habitat loss and climate change.
- Maintaining biodiversity is important for ecological, economic, and moral reasons, and countries have legal obligations to protect biodiversity.
This document discusses biodiversity, including its definition, distribution, and evolution. It defines biodiversity as the total variation of life at all levels of biological organization, from genes to ecosystems. Biodiversity is highest in tropical regions like rainforests and tends to decrease further from the equator. Several mass extinction events have occurred throughout Earth's history, notably including the Permian-Triassic event 251 million years ago. While biodiversity has generally increased over time, the current Holocene extinction caused by humans threatens to reduce it.
The document discusses food chains and food webs. It defines producers, consumers, and decomposers. It explains how energy and nutrients flow through ecosystems via trophic levels from primary producers to higher level consumers. Food webs are more complex than linear food chains and illustrate interconnecting feeding relationships in a community. Destabilizing food webs through human activities can negatively impact ecosystem functioning.
Food chains and food webs describe how energy moves through an ecosystem. A food chain represents a single path of energy transfer between organisms, such as from berries to rabbits to foxes. A food web shows multiple interconnected food chains and demonstrates that most organisms obtain energy from many different sources. Producers, like plants, capture energy from the sun to start the process, while consumers obtain energy by eating other organisms, and decomposers break down waste to recycle nutrients and energy back into the system.
This document discusses mass extinction events that have occurred throughout history. It provides details on 5 major extinction events, including their timing in millions of years ago and potential causes such as asteroid impacts, volcanic activity, climate change from glaciation or warming. The document also discusses various factors that can lead to species extinction, including climate change, changes in sea levels/currents, asteroids/cosmic radiation, acid rain, disease, invasive species, habitat loss, pollution, and human population growth.
This document introduces the concepts of ecology, ecosystems, biotic and abiotic factors. It defines ecology as the study of relationships between living and non-living things in environments. An ecosystem includes all biotic factors such as plants, animals and microbes as well as abiotic factors like air, water and soil. Biotic factors interact with each other and abiotic factors in complex ways. The document also discusses biomes as large regional communities defined by climate and plant life, and provides examples of biomes and ecosystems.
Species interaction refers to the relationships between different organisms. There are several types of species interactions: competition (-,-), predation (+,-), parasitism (+,-), commensalism (+,0), mutualism (+,+), and amensalism (-,0). Coevolution can occur when two species evolve in response to one another through these interactions over time. Species interactions are important for maintaining natural balances within ecosystems as no species can survive without some degree of interaction with other species.
The document discusses extinction and biodiversity loss. It defines extinction as occurring when the last member of a species dies. The passenger pigeon is provided as an example, with the last one dying alone in a zoo in 1914 after the species was already functionally extinct in the wild. Major causes of extinction discussed include habitat degradation and destruction from human activities like pollution, climate change, and overpopulation. Statistics are given on current extinction rates from human impacts being 1500 times the natural rate, with many species projected to be lost in the coming centuries if trends continue. The major impacts of biodiversity loss on human concerns like medicine, agriculture, ecosystem services, and moral obligations are also briefly touched on.
This document discusses energy transfer in ecosystems through food chains, webs, and pyramids. It explains that producers like plants obtain energy through photosynthesis, and consumers obtain energy by eating producers or other consumers. A food chain outlines the sequence of energy transfer from the sun to producers to primary, secondary, and tertiary consumers. Scavengers and decomposers also play roles in recycling nutrients and matter back into the ecosystem.
Decomposers are organisms such as bacteria and fungi that break down dead or decaying organisms and recycle nutrients in an ecosystem. They carry out the natural process of decomposition by releasing enzymes that digest dead matter and make nutrients soluble and available to other organisms. Examples of decomposers include fungi, bacteria, earthworms, flies, and wasps. Without decomposers, dead organic material would accumulate in ecosystems.
This document defines key terms related to ecosystems, including producers, consumers, decomposers, populations, communities, abiotic and biotic factors, food chains, and food webs. It explains that an ecosystem is a community of living things that interact with each other and their environment. It provides examples of different ecosystem types and describes the roles of producers, consumers, and decomposers in ecosystems. It emphasizes that all parts of an ecosystem are interconnected and important for the balance of the overall living environment.
Predation, mutualism, commensalism, or parasitismRick Turner
Commensalism is a relationship where one species benefits while the other is neither harmed nor helped. Examples include clownfish living among anemone tentacles for protection from predators, and birds eating insects near grazing animals. Parasitism is a harmful relationship where one organism, usually physically smaller, benefits by living on or in the host organism. Examples include ticks and fleas drinking blood, and vines growing on trees. Mutualism benefits both species, such as flowers and pollinators, and algae and fungi in lichens. Predation is when one organism eats another, such as herbivores eating plants and carnivores eating animals.
- Biotic interactions include predator-prey relationships, plant-herbivore relationships, competition, and symbiosis. Abiotic interactions involve interactions between organisms and environmental factors like temperature, light, and nutrients.
- Density-dependent factors like predation and competition cause populations to decrease when densities are high and increase when densities are low. Density-independent factors like fires and floods impact populations independently of their densities.
- Predator-prey relationships can follow stable, cyclical, erratic, or extinction patterns depending on factors like carrying capacity and reproduction rates of both species. Predators benefit from food while prey benefit from reduced competition.
The document discusses the three categories in a food chain: producers, consumers, and decomposers. Producers, like plants, obtain energy from sunlight through photosynthesis. Consumers, like animals, eat producers or other consumers to obtain energy and include carnivores, herbivores, and omnivores. Decomposers, like mushrooms and worms, break down dead organisms and waste and return nutrients to the soil. All categories are interdependent in the food chain.
This document discusses different types of symbiotic relationships between species: predation, parasitism, competition, mutualism, and commensalism. It provides examples for each type, such as predators and prey, parasites like ticks, competing species like Darwin's finches, mutualistic relationships like plants and pollinators, and commensal relationships like whales and barnacles. The document explains how these relationships can influence species' adaptations through mimicry, defenses, niche partitioning, and character displacement.
Symbiotic relationships refer to intimate associations between organisms of different species that provide a nutritional advantage. There are three main types: parasitism benefits the parasite at the host's expense, commensalism benefits one species without affecting the other, and mutualism benefits both species. Examples of each type are given.
Invasive species are introduced plants, animals, and microorganisms that negatively impact native ecosystems by outcompeting local species for resources and preying upon them without natural predators to control their growth. They can be transported unintentionally through various human means of travel and trade. Invasive species proliferate rapidly, reducing biodiversity and disrupting ecosystems, economies, and societies. Simple actions like cleaning gear and draining water from boats can help limit the spread of invasive species.
A food chain shows how organisms are related through the transfer of energy from one organism to another as each consumes the next. Food chains were first introduced in the 9th century and later popularized in a 1927 book. A food chain involves producers, consumers, and decomposers, with energy transferring unidirectionally. Typically, 80-90% of energy is lost at each transfer between trophic levels, though omnivores can occupy multiple levels. The document provides several examples of food chains within an ecosystem.
This document divides animals into two main groups: vertebrates and invertebrates. Vertebrates have backbones and include fish, mammals, and birds, while invertebrates like spiders and flies do not have backbones. It then discusses characteristics of different types of vertebrates, including cold-blooded vertebrates like fish that rely on external temperatures, warm-blooded vertebrates like mammals and birds that regulate their own body heat, and the main classes of vertebrates such as fish, amphibians, reptiles, birds, and mammals.
The document discusses food chains and food webs. It defines producers, consumers, and decomposers. It explains how energy and nutrients flow through ecosystems via trophic levels from primary producers to higher level consumers. Food webs are more complex than linear food chains and illustrate interconnecting feeding relationships in a community. Destabilizing food webs through human activities can negatively impact ecosystem functioning.
Food chains and food webs describe how energy moves through an ecosystem. A food chain represents a single path of energy transfer between organisms, such as from berries to rabbits to foxes. A food web shows multiple interconnected food chains and demonstrates that most organisms obtain energy from many different sources. Producers, like plants, capture energy from the sun to start the process, while consumers obtain energy by eating other organisms, and decomposers break down waste to recycle nutrients and energy back into the system.
This document discusses mass extinction events that have occurred throughout history. It provides details on 5 major extinction events, including their timing in millions of years ago and potential causes such as asteroid impacts, volcanic activity, climate change from glaciation or warming. The document also discusses various factors that can lead to species extinction, including climate change, changes in sea levels/currents, asteroids/cosmic radiation, acid rain, disease, invasive species, habitat loss, pollution, and human population growth.
This document introduces the concepts of ecology, ecosystems, biotic and abiotic factors. It defines ecology as the study of relationships between living and non-living things in environments. An ecosystem includes all biotic factors such as plants, animals and microbes as well as abiotic factors like air, water and soil. Biotic factors interact with each other and abiotic factors in complex ways. The document also discusses biomes as large regional communities defined by climate and plant life, and provides examples of biomes and ecosystems.
Species interaction refers to the relationships between different organisms. There are several types of species interactions: competition (-,-), predation (+,-), parasitism (+,-), commensalism (+,0), mutualism (+,+), and amensalism (-,0). Coevolution can occur when two species evolve in response to one another through these interactions over time. Species interactions are important for maintaining natural balances within ecosystems as no species can survive without some degree of interaction with other species.
The document discusses extinction and biodiversity loss. It defines extinction as occurring when the last member of a species dies. The passenger pigeon is provided as an example, with the last one dying alone in a zoo in 1914 after the species was already functionally extinct in the wild. Major causes of extinction discussed include habitat degradation and destruction from human activities like pollution, climate change, and overpopulation. Statistics are given on current extinction rates from human impacts being 1500 times the natural rate, with many species projected to be lost in the coming centuries if trends continue. The major impacts of biodiversity loss on human concerns like medicine, agriculture, ecosystem services, and moral obligations are also briefly touched on.
This document discusses energy transfer in ecosystems through food chains, webs, and pyramids. It explains that producers like plants obtain energy through photosynthesis, and consumers obtain energy by eating producers or other consumers. A food chain outlines the sequence of energy transfer from the sun to producers to primary, secondary, and tertiary consumers. Scavengers and decomposers also play roles in recycling nutrients and matter back into the ecosystem.
Decomposers are organisms such as bacteria and fungi that break down dead or decaying organisms and recycle nutrients in an ecosystem. They carry out the natural process of decomposition by releasing enzymes that digest dead matter and make nutrients soluble and available to other organisms. Examples of decomposers include fungi, bacteria, earthworms, flies, and wasps. Without decomposers, dead organic material would accumulate in ecosystems.
This document defines key terms related to ecosystems, including producers, consumers, decomposers, populations, communities, abiotic and biotic factors, food chains, and food webs. It explains that an ecosystem is a community of living things that interact with each other and their environment. It provides examples of different ecosystem types and describes the roles of producers, consumers, and decomposers in ecosystems. It emphasizes that all parts of an ecosystem are interconnected and important for the balance of the overall living environment.
Predation, mutualism, commensalism, or parasitismRick Turner
Commensalism is a relationship where one species benefits while the other is neither harmed nor helped. Examples include clownfish living among anemone tentacles for protection from predators, and birds eating insects near grazing animals. Parasitism is a harmful relationship where one organism, usually physically smaller, benefits by living on or in the host organism. Examples include ticks and fleas drinking blood, and vines growing on trees. Mutualism benefits both species, such as flowers and pollinators, and algae and fungi in lichens. Predation is when one organism eats another, such as herbivores eating plants and carnivores eating animals.
- Biotic interactions include predator-prey relationships, plant-herbivore relationships, competition, and symbiosis. Abiotic interactions involve interactions between organisms and environmental factors like temperature, light, and nutrients.
- Density-dependent factors like predation and competition cause populations to decrease when densities are high and increase when densities are low. Density-independent factors like fires and floods impact populations independently of their densities.
- Predator-prey relationships can follow stable, cyclical, erratic, or extinction patterns depending on factors like carrying capacity and reproduction rates of both species. Predators benefit from food while prey benefit from reduced competition.
The document discusses the three categories in a food chain: producers, consumers, and decomposers. Producers, like plants, obtain energy from sunlight through photosynthesis. Consumers, like animals, eat producers or other consumers to obtain energy and include carnivores, herbivores, and omnivores. Decomposers, like mushrooms and worms, break down dead organisms and waste and return nutrients to the soil. All categories are interdependent in the food chain.
This document discusses different types of symbiotic relationships between species: predation, parasitism, competition, mutualism, and commensalism. It provides examples for each type, such as predators and prey, parasites like ticks, competing species like Darwin's finches, mutualistic relationships like plants and pollinators, and commensal relationships like whales and barnacles. The document explains how these relationships can influence species' adaptations through mimicry, defenses, niche partitioning, and character displacement.
Symbiotic relationships refer to intimate associations between organisms of different species that provide a nutritional advantage. There are three main types: parasitism benefits the parasite at the host's expense, commensalism benefits one species without affecting the other, and mutualism benefits both species. Examples of each type are given.
Invasive species are introduced plants, animals, and microorganisms that negatively impact native ecosystems by outcompeting local species for resources and preying upon them without natural predators to control their growth. They can be transported unintentionally through various human means of travel and trade. Invasive species proliferate rapidly, reducing biodiversity and disrupting ecosystems, economies, and societies. Simple actions like cleaning gear and draining water from boats can help limit the spread of invasive species.
A food chain shows how organisms are related through the transfer of energy from one organism to another as each consumes the next. Food chains were first introduced in the 9th century and later popularized in a 1927 book. A food chain involves producers, consumers, and decomposers, with energy transferring unidirectionally. Typically, 80-90% of energy is lost at each transfer between trophic levels, though omnivores can occupy multiple levels. The document provides several examples of food chains within an ecosystem.
This document divides animals into two main groups: vertebrates and invertebrates. Vertebrates have backbones and include fish, mammals, and birds, while invertebrates like spiders and flies do not have backbones. It then discusses characteristics of different types of vertebrates, including cold-blooded vertebrates like fish that rely on external temperatures, warm-blooded vertebrates like mammals and birds that regulate their own body heat, and the main classes of vertebrates such as fish, amphibians, reptiles, birds, and mammals.
The document discusses food chains and food webs within an ecosystem. It defines a food chain as the transfer of energy from producers, like plants, through consumers at different trophic levels, and explains the key levels as producers, primary consumers, secondary consumers, and decomposers. Food webs are described as interconnected food chains that form a network of feeding relationships between species. Ecological pyramids illustrate the structure of ecosystems by depicting the numbers, biomass, or productivity at each trophic level, with producers at the base and top predators at the apex. Disturbances like bioaccumulation and biomagnification of chemicals can disrupt ecosystem balance.
This document is an interactive presentation about classifying animals into vertebrates and invertebrates. It begins with an introduction and objectives. It then discusses vertebrates, defining them as animals with backbones, and categorizing them into classes such as fish, amphibians, reptiles, birds, and mammals. Each class is then further described. The document also covers invertebrates, which do not have backbones, categorizing them into phyla such as sponges, worms, arthropods, mollusks, and echinoderms. Specific examples are provided for each category along with distinguishing features.
This lesson plan covers vertebrates and invertebrates over 10 sessions for 3rd course primary education students. It includes reading activities about the life cycles of frogs and fish. It also details lessons about the 5 groups of vertebrates - fish, amphibians, reptiles, birds, and mammals - exploring their characteristics like breathing, skeletons, scales/feathers, and reproduction. Lessons on invertebrates discuss their soft bodies, shells, breathing, and oviparous reproduction through larva and changes in shape as they grow. Comprehension questions reinforce key points about classifying and comparing vertebrates and invertebrates.
This document discusses food chains and food webs. It explains that a food chain begins with an energy source like a producer and is made up of different trophic levels including producers, primary consumers, secondary consumers, and tertiary consumers. Producers make their own food, primary consumers eat plants, secondary consumers eat herbivores, and tertiary consumers eat other carnivores.
- All organisms ultimately get their energy from the sun through photosynthesis carried out by producers like plants and algae or through consumption of other organisms.
- There are different types of consumers in food chains including herbivores, carnivores, omnivores, and decomposers. Parasites also feed on other living organisms.
- Food chains show the transfer of energy from producers to primary, secondary, and tertiary consumers and decomposers. Multiple interconnected food chains make up a food web.
Chapter 4 interdependence among living organisms and the envirronmentIzudin Hasan
This document discusses interdependence among living organisms and the environment. It covers topics such as species, populations, communities, habitats, ecosystems, interactions between living organisms including predator-prey relationships, symbiosis, competition, food webs, and the importance of photosynthesis. Photosynthesis produces oxygen and food for animals while using carbon dioxide, and the carbon and oxygen cycles help regulate gas levels on Earth. Conservation efforts aim to preserve natural resources for future generations.
This document summarizes key concepts about ecosystems, including:
1. The roles of producers, consumers, and decomposers in energy flow and nutrient cycles.
2. Examples of food chains and food webs that demonstrate how energy transfers between organisms.
3. The water, carbon, and oxygen cycles and how they circulate important nutrients.
4. Interactions between species like predation, symbiosis, competition and their effects on populations.
5. Factors like disease, weather, food and predators that influence population sizes.
6. Human activities that can disrupt ecosystems and steps to address effects on the environment.
This document provides information about food webs and energy transfer between organisms in an ecosystem. It discusses producers like plants that obtain energy from the sun or chemicals and consumers that obtain energy from eating other organisms. Producers and consumers are organized into trophic levels within food chains and food webs. Food webs illustrate the complex interconnected feeding relationships between multiple species in an ecosystem. Disruptions to lower trophic levels can impact higher levels and introducing non-native species could disturb the entire food web. The document includes an example food web for the Kamloops Bunchgrass plant community.
1. An ecosystem is composed of individual organisms that make up populations, several populations that make up a community, and the biotic and abiotic factors that make up the ecosystem. Ecosystems are found within different biomes, which together make up the biosphere.
2. An organism's habitat is the place it lives and provides its needs, while its niche is its role in the ecosystem including how it obtains food and interacts with other organisms.
3. Within an ecosystem, producers like plants use photosynthesis to make their own food, while consumers eat other organisms for energy as herbivores, carnivores, omnivores, or decomposers. Organisms engage in symbiotic relationships of
1. An ecosystem is composed of individual organisms that make up populations, several populations that make up a community, and the biotic and abiotic factors that make up the ecosystem. Ecosystems are found within different biomes, which together make up the biosphere.
2. An organism's habitat is the place it lives and provides its needs, while its niche is its role in the ecosystem including how it obtains food and interacts with other organisms.
3. Within an ecosystem, producers like plants use photosynthesis to make their own food, while consumers eat other organisms for energy as herbivores, carnivores, omnivores, or decomposers. Organisms engage in symbiotic relationships that
This document discusses types of ecological relationships and succession. It describes 4 main types of ecological relationships: symbiosis, saprophytism, prey-predator, and competition. Under symbiosis it defines and provides examples of mutualism, parasitism, and commensalism. It then discusses different examples of mutualistic relationships between species. The document also discusses parasitism, commensalism, competition, and succession - the process by which one community gradually replaces another through changes to the environment.
Ecology is the study of interactions between living organisms and their environment. It examines both biotic factors like plants, animals, and microorganisms, as well as abiotic factors such as sunlight, water, and soil. Ecology views environments holistically and studies the complex relationships within and between populations in an ecosystem. Organisms depend on each other through food webs, with plants and algae as primary producers, herbivores and omnivores as primary consumers, and carnivores and decomposers recycling nutrients and matter. Ecology analyzes these interactions across different levels of organization from organisms and populations to communities, ecosystems, and the global biosphere.
This document defines key terms related to ecosystems, including producers, consumers, decomposers, food chains, and food webs. It provides examples of each trophic level and discusses how energy flows through ecosystems. Producers, like plants, capture energy from the sun that is then consumed by primary, secondary, and tertiary consumers. Decomposers, such as bacteria and fungi, break down dead organisms and waste. While nutrients cycle through the ecosystem, most energy is lost as heat at each trophic level, with only 10-15% transferred to the next level.
Ecology is the study of the interactions between organisms and their environment. An ecologist studies ecology. Key concepts in ecology include biotic and abiotic factors, the 5 levels of ecological organization (organism, population, community, ecosystem, biosphere), producers, consumers, decomposers, food chains, food webs, energy pyramids, populations, communities, limiting factors, and carrying capacity.
Objective Three: The Interdependence of Organisms and the Environment (Biology)chendaduong
- Plants have three main organ systems - roots, stems, and leaves - that carry out key functions like water and nutrient absorption, photosynthesis, and providing structure and support.
- Within plants, chloroplasts use energy from sunlight to produce glucose through photosynthesis. Plants get their energy from glucose. Animals then obtain energy by eating plants or other animals that eat plants.
- Metabolism refers to the chemical reactions in organisms that break down glucose to produce energy. This energy transfer between organisms through food webs and food chains drives ecosystem function.
This document provides an overview of key concepts related to ecosystems, including:
- An ecosystem consists of both biotic (living) and abiotic (non-living) components that interact. Examples of ecosystems include forests and oceans.
- Energy from the sun or chemicals flows through an ecosystem via food chains and webs. Producers like plants harness energy, which is then consumed by herbivores, carnivores, and decomposers at increasing trophic levels.
- Organisms within an ecosystem engage in various interactions such as competition, predation, and symbiosis. While competition occurs when organisms require the same resources, symbiotic relationships can be mutualistic, commensalistic, or parasitic in nature
Ecology is the study of interactions between organisms and their environment. It examines these connections across different levels of organization, from organisms and populations up to ecosystems, biomes, and the biosphere. Ecosystems consist of biotic and abiotic factors interacting within a defined area. Energy and nutrients flow through ecosystems via food chains, food webs, and other pathways. Climate and other environmental factors help determine the different biomes found around the world such as deserts and forests.
This document discusses relationships between living things in an ecosystem. It defines key terms like species, population, and community and explains how they interact. It also outlines the different ways living things obtain food, including producers, primary consumers, secondary consumers, tertiary consumers, and decomposers. Finally, it introduces the concept of food chains to show how food transfers from one organism to another.
This document discusses habitats and adaptations. It explains that a habitat is an organism's environment and surroundings. Organisms are adapted to their habitats through physical traits that allow them to survive, such as a rabbit's large ears and hind legs. The document also covers feeding relationships, with producers making food, herbivores eating plants, and carnivores preying on other animals. Predators have adaptations for hunting prey, while prey have adaptations for avoiding predators.
This document discusses ecosystems. It begins by defining an ecosystem as a system formed by organisms and their physical environment. It then describes the classification of organisms into producers, consumers, and decomposers. It identifies two main types of ecosystems: terrestrial and aquatic. Key characteristics of ecosystems are that they vary in size and structure, can be natural or artificial, and experience flows of energy and matter. Examples of ecosystems mentioned include forests, coral reefs, and wetlands. Food webs and chains are explained as the transfer of energy between trophic levels. The importance of interdependence between organisms is also covered.
FINAL presentation on "how do living things interact?"nehal bebers
This document discusses ecosystems and how living and non-living things interact within them. It defines key terms like producers, consumers, decomposers, food chains, and food webs. Producers (plants) produce their own food, consumers (animals) eat other organisms, and decomposers (fungi, bacteria) break down dead organisms, recycling nutrients. Food chains show energy transfer between organisms, while complex food webs connect multiple chains in an ecosystem. All organisms depend on each other for survival.
This document discusses ecosystems and how living and non-living things interact within them. It defines key terms like producers, consumers, decomposers, food chains, and food webs. Producers (plants) produce their own food, consumers (animals) eat other organisms, and decomposers (fungi, bacteria) break down dead organisms, recycling nutrients. Food chains show energy transfer between organisms, while complex food webs connect multiple chains in an ecosystem. All organisms depend on each other for survival.
The document discusses key concepts in ecology, including producers, consumers, trophic levels, and ecological interactions. It defines ecology as the scientific study of interactions between organisms and their environment. Producers, like plants, capture energy from the sun through photosynthesis. Consumers rely on producers or other consumers for food and include herbivores, carnivores, omnivores, and decomposers. Food chains and webs show the transfer of energy between trophic levels in an ecosystem. Ecological pyramids illustrate the decrease in biomass and energy at higher trophic levels due to only 10% of energy being transferred between levels. Ecological niches describe an organism's role and interactions within its habitat
The document defines key terms related to ecosystem structures and population interactions. It distinguishes between biotic (living) and abiotic (non-living) components of ecosystems. Trophic levels including producers, primary consumers, secondary consumers, and decomposers are explained. Pyramids of numbers, biomass and productivity are defined. Species, populations, habitats, niches, communities, and ecosystems are defined using local examples. Population interactions such as mutualism, parasitism, predation, herbivory and competition are described through examples.
1. The document summarizes a study that examined how temperature influences competition between three fish species - brook trout, brown trout, and creek chub - for food and habitat in mountain streams.
2. The study found that at lower temperatures below 22-25°C, brook and brown trout were stronger competitors than creek chub, consuming more food and exhibiting more aggressive behaviors. However, above this temperature range the creek chub had a competitive advantage.
3. Overall, the study concluded that temperature mediates competitive interactions between the three fish species, which helps explain their natural separation into different elevation zones along mountain streams according to temperature tolerance.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
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His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
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Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
1. FOOD CHAINS
AND
FOOD WEBS
GENERAAL HERTZOG: MRS F BEUKES
2. Introduction
ECOLOGY: The study of living organisms and the
places where they live..
Living organisms that live together in an environment are interdependent.
But the environmental conditions, e.g. soil, water and climate also play an important
role. Ecosystems vary in size. Examples are the Kruger National Park, Kalagadi, the
Botanical gardens and the Gariep dam.
3. ECOSYSTEM: An area where living (biotic) and non-living (abiotic) things live and interact with each
other.
BIODIVERSITY: The diverse spectrum of life found in one habitat.
ECOSYSTEMS are grouped into biomes, namely:
• SAVANNA
• MIDLATITUDE GRASSLANDS
• BOREAL FOREST
• TROPICAL RAIN FOREST
• SCRUBLAND
• OPEN WOODLAND
• DESERT
• TUNDRA
HABITAT: The area in which plants and animals live.
There are various habitats in an ecosystem. .
Examples:
A cheetah’s habitat is SAVANNA GRASSLANDS.
4. Various plants and animals can be found in each habitat.
The plants and animals in a habitat depend on each other for food and protection
and they form a community.
COMMUNITY: All the living things in one habitat.
Communities consist of a variety of populations, such as herds of kudu, flocks of sparrows and
schools of fish.
POPULATION: One kind of living organism that is found in one habitat.
6. .
Sun
provides
energy.
Snake is then
eaten by the
Plants (producers)
falcon.
use this energy to
produce their own
food.
Frog is eaten by
the snake (tertiary
consumer).
Grasshopper
(primary
consumer)
Frog
eats the grass.
(secondary
consumer) eats the
grasshopper.
7. After the falcon dies, its body is broken down by detritivores and decomposers and
energy is released into the soil, atmosphere and water.
Energy is transferred from one organism to the other in this manner.
FOOD CHAIN: It is the relationship where energy (in food) flows between living organisms.
8. CIRCULATION OF NUTRIENTS :
Consumers:
• primary
• secondary
• tertiary Die and are
Eaten by decomposed by
Die and are Detritivores and
Producers decomposed by Decomposers
Consumed by
Nutrients
Used in photosynthesis
9. Exercise 10
1 Give one word for the following descriptions :
1.1 The relationship where energy (in food) flows between
FOOD CHAIN
living organisms.
1.2 One kind of living organism that is found in a habitat.
POPULATION
1.3 The variety of life found in an ecosystem.
BIODIVERSITY
1.4 All the living organisms of a specific kind that live
POPULATION
together in an ecosystem.
1.5 The diversity of life in a habitat.
COMMUNITY
1.6 An area where living (biotic) and non-living (abiotic)
ECOSYSTEM
things live and interact with each other, e.g. a jungle.
10. 2 Study the sketch below and answer the questions that follow:
2.1 What does this sketch represent?
An ecosystem
2.2 Use the sketch as reference and give an example of:
2.2.1 a predator: Lion/cheetah/eagle
2.2.2 an omnivore: Ostrich
2.2.3 a herbivore: Giraffe/zebra/springbok/blue wildebeest
2.3 Write down two different food chains that are found in this sketch.
grass → springbok → cheetah
tree → giraffe → lion
11. 2.4 Explain why there are so many more herbivores in the habitat than carnivores.
There is more food for the herbivores to eat than for the carnivores.
If there were more carnivores in this habitat, the herbivores would not have
been a sufficient amount of food for the carnivores.
2.5 Explain why giraffes and zebras do not compete for food.
Giraffes eat leaves from trees, while zebras feed on grass. Therefore these
two animals eat different types of food and thus they do not compete for
food.
2.6 Explain why lions and cheetahs compete against each other in this habitat.
Lions and cheetahs are both carnivores. Both these animals may hunt the same
animals and therefore they are each other’s competitors.
12. 3 Study the diagram below and answer the questions that follow
C
B
D
A
plants
soil surface
decomposers
food
excretion
decomposition
respiration
13. 3.1 What does this diagram represent?
A food chain
3.2 What does the arrow at D represent?
Radiation from the sun
3.3 What is another name that can be given to plants? Give a reason for your answer.
Producers, because plants have the ability to produce their own food.
3.4 What does B represent? Give an example.
Secondary consumers for example snakes
3.5 Can C be a herbivore? Motivate your answer.
No, because herbivores only feed on plants (producers) and they are the primary consumers. C is a tertiary
consumer.
3.6 Complete A, B and C with your own examples so that the diagrams follow logically.
A: mouse
B: snake
C: eagle
3.7 What do plants, A, B and C release into the atmosphere during respiration?
Carbon dioxide (CO 2)
3.8 What does “excretion” mean?
Excretion is waste products that are excreted by humans and animals.
3.9 Give an example of decomposers.
Bacteria/Fungi
15. Various food chains and how they are linked:
• Worms, grasshoppers, mice, guinea fowls and antelope eat grass and plants.
• Herbivores are a source of food for various predators, carnivores and omnivores.
The grasshopper is eaten by the frog and the bird.
The snake catches the mouse.
The genet catches the mouse, frog, guinea fowl, bird and snake.
The antelope is eaten by the leopard.
The genet, guinea fowl and bird are eaten by the eagle.
• Because the food chains overlap, a food web exists.
• Decomposers are always at the top of the food chain or food web.
• Decomposers recycle the nutrients in dead plants and animals and plough it back
• into the soil.
• These nutrients will make the soil fertile and make it possible for plants to grow.
16. Activity 13
Investigate your area. See how many different food chains you can identify and
write them down. Food chains in my environment:
Seed → pigeon/mouse → cat/owl
Flowers → butterfly/moth → spider/gecko → crow
Flowers → plant louse → ladybug → spider → crow
Crops → snale → corn cricket → woodpecker
Crops → mouse → cat/owl
Leaves → worms → hoopoe → cat
Determine how many of these food chains are connected, and then draw your own
food web.
Seed Flowers Crops Leaves
Pigeon Mouse Butterfly Moth Plant-louse Snail Worms
Spider Ladybug Corn cricket Hoopoe
Gecko Wood pecker
Cat Crow WWW.DOCSCIENTIA.CO.ZA
17. 3.4 Fossil fuels
There are some circumstances where animals and plants die and it is
impossible for them to decompose and so their remains become
earthbound.
Over a long period of time the remains of these animals and plants are
CONVERTED BY HEAT AND PRESSURE INTO FOSSIL FUELS, e.g. coal and oil
Energy is released when these fuels are burned.
People all over the world are dependent on this energy for electricity, heating,
petrol, etc.
NON-RENEWABLE RESOURCES: cannot be replenished (made again) in a short space of time..
Fossil fuels are non-renewable resources.
18. The mining and burning of fossil fuels lead to pollution.
Harmful greenhouse gasses are released into the atmosphere – ACID RAIN is formed.
GREENHOUSE GASES: Gases whose molecules can absorb harmful infrared radiation from the
sun and release them within our atmosphere.
INTERDEPENDENCE IN ECOSYSTEMS
Organisms depend on other biotic (living) organisms and abiotic (non-living)
aspects of their habitat.
These dependencies result in certain relationships better known as SYMBIOSIS.
There are three different symbioses (interdependencies):
SYMBIOSIS
Mutualism Parasitism
Commensalism
19. MUTUALISM:
Both parties benefit from the relationship that was created
Examples:
Animal-animal crocodile and Egyptian plover
A crocodile lies with its mouth open so that the Egyptian plover is able to get rid of
small pieces of meat that got stuck between the crocodile’s teeth.
The plover feeds on the small pieces of meat that were stuck between
the teeth.
Animal-plant bees and flowers
Bees depend on the flower’s nectar for nutrients.
On the other hand flowers depend on bees to spread their pollen and thus ensure
pollination.
Plant-plant lichens
Lichens actually consist of two plants – fungi and algae.
The fungi absorbs water and nitrogenous substances and provide them to the
algae. The algae produce carbohydrates through photosynthesis and provide them to the fungi .
20. COMMENSALISM:
In this relationship one party will benefit, while the other will not benefit nor will it
be disadvantaged.
Examples:
Animal-animal white egret and cattle
While cattle are grazing, insects are driven into the air and are eaten by
white egret. The white egret is benefitting, but there is no benefit or
disadvantage to the cattle.
Animal-plant finches and trees
Finches build their nests in tall trees. The tree provides protection against
predators and floods, so the finch is benefitting. The tree is not at a disadvantage
due to the nest, but it also does not benefit by this relationship.
Plant-plant orchids and trees
Orchids are not fed by the trees. They need the trees so that they may
grow higher and thus get more sunlight necessary for photosynthesis.
Since orchids do not feed on the trees, the tree is not disadvantaged but it
also does not benefit from this relationship.
21. PARASITISM:
In this instance one party will be disadvantaged while the other benefits.
Examples: Animal-animal ticks and dogs
The tick is benefitting from this relationship since it feeds on the dog.
On the other hand the dog is disadvantaged and may even become infected
with an illness like biliary.
Plant-plant dodder on other plants
Dodder obtains all its water, nutrients and carbohydrates
from its host and all of this is to the host’s disadvantage.
The abiotic aspects in a habitat play just as important role in
the survival of biotic organisms.
Abiotic factors: Water, soil, oxygen and carbon dioxide.
22. Exercise 11
1 Consider the diagram below and answer the questions that follow .
Seed
Birds Mouse
Snake
Eagle
1.1 What does this diagram represent?
A food web
1.2 If there was an increase in snakes, which animal will also increase? Give a reason for your answer.
Eagles, because the more snakes there are, the more food there is for the
eagles. The circumstances are favourable for the eagles to increase.
WWW.DOCSCIENTIA.CO.ZA
23. 1.3 If there was an increase in snakes, which animal would decrease? Give a reason for your answer.
Birds and mice, because they serve as a food source for the snakes. If there
are more snakes to feed on them, the amount of birds and mice will decrease .
1.4 What animals are the ... in this case:
primary consumer: bird; mouse
secondary consumer: snake; eagle
predator: snake; eagle
herbivore: bird; mouse
2 Give one word/term for the following:
2.1 Fuels like oil, natural gasses and petrol FOSSIL FUELS
2.2 Interdependence in ecosystems SYMBIOSIS
2.3 One party benefits, while the other does not benefit nor is it COMMENSALISM
disadvantaged.
2.4 These remains of animals and plants have been converted FOSSIL FUELS
over millions of years.
2.5 A variety of food chains that are linked. FOOD WEB
24. 3. Match column A to column B. Write down the correct letter next to the description.
E A. Parasitism
The relationship between ants and
plant lice.
A variety of food chains that overlap. C B. Ecology
The area where plants and animals live. G C. Food web
The relationship between a clown fish D. Fossil fuels
and an anemone.
F
A herd of springbok on the grasslands. E. Mutualism
H
It is produced from the remains of plants and animals under extreme F. Commensalism
heat and pressure.
D
The study of living organisms and the places where they live. G. Habitat
B
The relationship between humans and H. Population
tapeworms.
A