There are more species in tropical areas than in places more ...

[penza]

There are more species in tropical areas than in places more distant from the equator. This is probably a result of
A) fewer predators.
B) more intense annual solar radiation.
C) more frequent ecological disturbances.
D) fewer agents of disease.
E) fewer predators, more intense annual solar radiation, more frequent ecological disturbances, and fewer agents of disease.

[Celeste]

B