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Biology, 16.09.2019 22:30 hvvhvc

Which of these is a biotic factor of an ecosystem?
a.
the temperature of water in a stream
b.
the bacteria that live in the intestine of a rabbit
c.
the amount of water vapor present in a rain forest
d.
the rocks that provide cover for a rattlesnake

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Which of these is a biotic factor of an ecosystem?
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