In the Nitrogen Cycle,the Bacteria That Replenish the Atmosphere with N₂

Question

In the nitrogen cycle,the bacteria that replenish the atmosphere with N₂ are
A)Rhizobium bacteria.
B)nitrifying bacteria.
C)denitrifying bacteria.
D)methanogenic protozoans.
E)nitrogen-fixing bacteria.

Accepted Answer

Denitrifying bacteria convert nitrates (NO3-) in the soil back into nitrogen gas (N2), thus replenishing the atmosphere with nitrogen.