Why Do Tropical Communities Tend to Have Greater Species Diversity

Multiple Choice

Why do tropical communities tend to have greater species diversity than temperate or polar communities?

A) Tropical communities are less likely to be affected by human disturbance.
B) There are fewer parasites to negatively affect the health of tropical communities.
C) The tropics are lower in altitude as compared to temperate and polar regions.
D) Tropical communities are generally older than temperate and polar communities.
E) Competitive dominant species have evolved in temperate and polar communities.