Invasive Species Have Been

question 58

Multiple Choice

Invasive species have been

• A)hunted to extinction in most places where they occur.
• B)successfully controlled in most regions using predators,viral or bacterial agents.
• C)successfully controlled by the introduction of other alien species that are natural competitors.
• D)an ecological problem in North America since the first European colonists arrived.

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Definitions:

Law of Demand

The economic principle that, all else being equal, there is an inverse relationship between the price of a good and the quantity demanded.

Other-Things-Equal Assumption

The assumption that factors other than those being considered are held constant. Also known as the ceteris paribus assumption.

Supply

The total amount of a specific good or service that is available to consumers at current prices.

Excise Tax

A tax imposed on specific goods, services, or activities, such as tobacco, alcohol, and fuel, usually intended to discourage their use or generate revenue.