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:

Producer Surplus

The difference between what producers are willing to accept for a good or service versus what they actually receive in the market.

Producer Surplus

The difference between the amount that producers are willing to accept for a good or service versus what they actually receive.

Consumer Surplus

The difference between the maximum price a consumer is willing to pay for a product and the actual market price they pay.

Government Revenue

The money received by a government from taxes, fees, fines, intergovernmental grants, and other sources to fund public spending.