One Plausible Hypothesis to Explain Why Species Richness Is Higher

question 15

Multiple Choice

One 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) tropical regions have very high rates of immigration and very low rates of extinction

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Definitions:

Menstrual Cycles

The regular natural change that occurs in the female reproductive system that makes pregnancy possible, typically a 28-day cycle.

Tastants

Chemical compounds that stimulate the taste receptors on the tongue.

Molecules

The smallest unit of a chemical compound that can exist; made up of two or more atoms bonded together, retaining the properties of that compound.

Taste

Taste is one of the five traditional senses, involving the perception of flavor from substances on the tongue, categorized into sweet, sour, salty, bitter, and umami.