SelenaMitchem SelenaMitchem

31-03-2015
Biology

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nitrogen-fixing bacteria live in in protective nodules (bumps) on the roots of some plants. A.mutualism. B.predation. C.commensalism. D.parasitism.

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Аноним Аноним

31-03-2015

Nitrogen fixing bacteria live in protective nodules on the roots of some plants is Mutualism.

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