Question

How is nitrogen returned to the atmosphere during the nitrogen cycle?
a.
It is returned to the atmosphere in a process called nitrogen fixation.
b.
It is returned to the atmosphere through denitrification.
c.
It is returned to the atmosphere through cellular respiration.
d.
It is returned to the atmosphere through evapotranspiration.


Please select the best answer from the choices provided

A
B
C
D

Answer 1

B

Denitrification (by denitrifying bacteria) converts nitrate or nitrite back into nitrogen gas (N2), returning it to the atmosphere.