The Most Plausible Hypothesis to Explain Why Species Richness Is

question 68

Multiple Choice

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

• A)tropical communities are younger.
• B)tropical regions generally have more available water and higher levels of solar radiation.
• C)higher temperatures cause more rapid speciation.
• D)biodiversity increases as evapotranspiration decreases.
• E)tropical regions have very high rates of immigration and very low rates of extinction.

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Definitions:

American Cities

Urban areas within the United States, governed by local administrations and holding significant cultural, economic, and political importance.

Midwestern American Cities

Urban areas located in the Midwestern region of the United States, known for their diverse industries, cultural heritage, and historical significance.

Genus

In biology, a way to group together species that are closely related, showing the common attributes shared by the species within it.

Species

The fundamental element of biological categorization, identified as a collection of living entities made up of similar individuals who can exchange genes or mate with each other.