Which of the following is a hypothesis generated by biologists to explain species richness gradients?
A) Greater competition in the tropics has led to narrower niches and thus more species in the tropics than elsewhere.
B) The lack of mutualisms in the higher latitudes limits the number of species in high latitude communities.
C) Intense predation in the polar regions limits the number of species that can live there.
D) Both a and b
E) Both b and c

Question

Quizplus · Accepted Answer

Greater competition in the tropics leading to narrower niches is a hypothesis that explains why there might be more species in the tropics compared to other regions.

Which of the Following Is a Hypothesis Generated by Biologists