Which Is NOT a Hypothesis That Attempts to Explain the Latitudinal

Multiple Choice

Which is NOT a hypothesis that attempts to explain the latitudinal diversity gradient?

A) Species in tropical habitats have had longer to evolve and diversify.
B) Temperate communities have fewer species due to the need to adapt to a wider range of weather conditions.
C) Tropical areas have larger population sizes for a given species.
D) A given species in tropical habitats may be more spread out, leaving room in between for others.
E) Tropical areas generally have more parasites that may attack particular types of trees, thereby affecting their distribution.