In the nitrogen cycle, the organisms that replenish the atmosphere with N2 are
A) mycorrhizal fungi.
B) nitrifying bacteria.
C) denitrifying bacteria.
D) nitrogen-fixing bacteria.

Name: In the nitrogen cycle, the organisms that replenish the atmosphere with N2 are A) mycorrhizal fungi. B) nitrifying bacteria. C) denitrifying bacteria. D) nitrogen-fixing bacteria.
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Quizplus · Accepted Answer

Denitrifying bacteria convert nitrates back into nitrogen gas (N2), releasing it into the atmosphere.

In the Nitrogen Cycle, the Organisms That Replenish the Atmosphere