Ecosystems Review

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What is an ecosystem?

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An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (soil, water, air) in a specific area.

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What is a food chain?

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A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

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What are producers in an ecosystem?

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Producers are organisms, usually plants, that create their own food through photosynthesis and provide energy for other organisms in the food chain.

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What is the role of consumers in a food chain?

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Consumers are organisms that eat other organisms (plants or animals) to obtain energy. They can be herbivores, carnivores, or omnivores.

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What is a primary consumer?

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A primary consumer is an organism that eats producers. For example, a grasshopper that eats grass.

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What is a secondary consumer?

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A secondary consumer is an organism that eats primary consumers. For example, a mouse that eats grasshoppers.

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What is a tertiary consumer?

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A tertiary consumer is an organism that eats secondary consumers. For example, an owl that eats mice.

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What is the significance of the sun in an ecosystem?

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The sun is the primary source of energy for most ecosystems, providing the energy needed for photosynthesis in plants.

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What is a food web?

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A food web is a complex network of interconnected food chains in an ecosystem, showing how different organisms are related through feeding relationships.

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What is a biotic factor?

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Biotic factors are the living components of an ecosystem, such as plants, animals, and microorganisms, that affect the environment and other organisms.