Climate Has Been Proposed to Play a Role in the Latitudinal

Multiple Choice

Climate has been proposed to play a role in the latitudinal diversity gradient. Specifically, some have hypothesized that:

A) the warm climate of the tropics promotes high speciation rates.
B) the warm climate of the tropics promotes niche diversification.
C) relatively few species are able to adapt to the harsher, more variable climates of the high latitudes.
D) the harsh, more variable climates of the high latitudes reduce speciation rates.
E) None of the answer options is correct.