biotic factor

noun Ecology.
a living thing, as an animal or plant, that influences or affects an ecosystem: How do humans affect other biotic factors? Weather is not a biotic factor because it is not alive.
Compare abiotic factor.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
In the upper intertidal marsh, the spatial scale of heterogeneity depends on the abiotic or biotic factor.
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