Which of the following is true about the general geographic distribution of richness and equitability?
A)Both richness and equitability,and therefore biodiversity,increase from the tropics to the poles.
B)Both richness and equitability,and therefore biodiversity,decrease from the tropics to the poles.
C)Richness decreases from tropical areas to polar areas; equitability may increase toward the poles,but overall,biodiversity decreases from the tropics to the poles.
D)Richness increases from tropical areas to polar areas; equitability may decrease toward the poles,but overall,biodiversity increases from the tropics to the poles.

Question

Quizplus · Accepted Answer

This is based on the latitudinal gradient hypothesis, which suggests that biodiversity decreases from the tropics to the poles. This is true for richness, while equitability may increase toward the poles. Therefore, overall biodiversity decreases from the tropics to the poles.

Which of the Following Is True About the General Geographic