Which of the Following Statements About Extinction Is False

question 2

Multiple Choice

Which of the following statements about extinction is false?

• A)Extinction is the elimination of a species from Earth.
• B)Background extinction eradicates a large number of species during a relative short period of geologic time.
• C)Mass extinctions have occurred 5-6 times throughout Earth's history.
• D)Extinction rates are accelerated by human activities.
• E)The present extinction rate is 100-1,000 times the background rate.

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Definitions:

Ad Valorem Tariff

A type of tariff based on a percentage of the value of the imported goods, rather than on quantity or weight.

Fixed Tariff

A preset tax or duty to be paid on particular imports or exports, which remains unchanged over a period regardless of economic conditions.