Question
Question: Nitrogen of often in short supply in terrestrial ecosystems. Why?...
Nitrogen of often in short supply in terrestrial ecosystems. Why?
A
There is very little free nitrogen in the air.
B
Atmosphere nitrogen is primarily in the stratosphere and does not come into cantact with terrestrial ecosystems.
C
Atmospheric nitrogen cannot be used by most organisms. It needs to be converted to useful forms by bacteria and cyanobacteria.
D
Nitrogen solubility in water is very low and there-fore atmospheric nitrogen enters cells very slowly.
Answer
Atmospheric nitrogen cannot be used by most organisms. It needs to be converted to useful forms by bacteria and cyanobacteria.