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decomposer

The definition of a decomposer is an organism that causes organic material to break down or decompose.

(noun)

A worm that causes compost to break down is an example of a decomposer.

See decomposer in American Heritage Dictionary 4

noun

An organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem.

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decomposer

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