The Phosphorus Cycle Differs from the Carbon Cycle in That

Multiple Choice

The phosphorus cycle differs from the carbon cycle in that:

A) there is little or no human impact on the phosphorus cycle.
B) phosphorus is not a critical component of living organisms.
C) the hydrosphere plays a role in the phosphorus cycle.
D) the atmosphere does not contribute to the phosphorus cycle.
E) plants play a role in the carbon cycle, but have no role in the phosphorus cycle.