Ecology and Environmental Science Terms

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atom

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The basic unit of a chemical element.

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biome

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A large naturally occurring community of flora and fauna occupying a major habitat.

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biosphere

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The global sum of all ecosystems, where life exists.

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community

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A group of interdependent organisms of different species growing or living together in a specified habitat.

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ecosystem

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A biological community of interacting organisms and their physical environment.

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molecule

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A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.

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population

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All the inhabitants of a particular town, area, or country.

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consumer

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An organism that feeds on plants or other animals for energy.

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decomposer

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An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.

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food web

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A system of interlocking and interdependent food chains.