The Carbon Cycle Differs from the Nitrogen Cycle in That

Question

The carbon cycle differs from the nitrogen cycle in that
A) there is a large atmospheric pool of carbon.
B) the residence time of carbon is longer.
C) the nitrogen cycle requires specialized organisms.
D) the carbon cycle is in equilibrium.
E) none of the above

Accepted Answer

The nitrogen cycle requires specialized organisms, such as nitrogen-fixing bacteria, to convert atmospheric nitrogen into forms usable by plants and animals, whereas the carbon cycle does not require such specialized organisms.