What happens to the molecules of Nitrogen as it goes through deposition?

Nitrogen is often a limiting nutrient in many ecosystems because
A) there is much less nitrogen in the atmosphere than carbon.
B) elemental nitrogen is very rapidly used by most organisms.
C) nitrogen availability is being reduced by pollution due to fertilizer use.
D) most organisms cannot use nitrogen in its elemental form.

It dont even matter because at the end of thre day we gone life like it ius s

Particle exchange energy though elastic collision , hope this .