In the nitrogen cycle, nitrogen can return to the lithosphere directly from the atmosphere by

a small amount of nitrogen is fixed by lightning, but most of the nitrogen harvested from the atmosphere is removed by nitrogen-fixing bacteria and cyanobacteria (formerly called blue-green algae). The nitrogen cycle transforms diatomic nitrogen gas into ammonium, nitrate, and nitrite compounds.

Hope that helps!

c

explanation:

b. read the phase at the intersection of any given temperature and pressure.