Which of the Following Is a Widely Supported Explanation for the Tendency

Multiple Choice

Which of the following is a widely supported explanation for the tendency of tropical communities to have greater species diversity than temperate or polar communities?

A) There are fewer parasites to negatively affect the health of tropical communities.
B) Tropical communities are low in altitude, whereas temperate and polar communities are high in altitude.
C) Tropical communities have higher sunlight and precipitation, and are generally older than temperate or polar communities.
D) More competitive dominant species have evolved in temperate and polar communities.