Ecology Concepts

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food web

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a system of interlocking and interdependent food chains.

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food chain

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A series of steps in which organisms transfer energy by eating and being eaten.

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Producer

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An organism that can make its own food.

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consumer

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An organism that obtains energy by feeding on other organisms.

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primary consumer

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An organism that eats producers.

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secondary consumer

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An organism that eats primary consumers.

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Tertiary Consumer

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An organism that eats secondary consumers.

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Decomposer

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An organism that breaks down wastes and dead organisms.

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Biomass

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the total mass of organisms in a given area or volume.

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carbon sink

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A natural environment that absorbs and stores more carbon dioxide from the atmosphere than it releases, which offsets greenhouse gas emissions.