Many Introducespecies Havhadeleterious Effects on Communities Anecosystems Because

question 22

Multiple Choice

Many introducespecies havhadeleterious effects on communities anecosystems because

• A)coevolved parasites and pathogens are absent.
• B)the introduced species are long-lived.
• C)predators prefer the introduced species, and the local prey therefore proliferate to dangerously high levels.
• D)the community from which they came lost an important predator, competitor, or parasite.
• E)human beings do not know how to appreciate them.

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Definitions:

Bushel of Corn

A standard measure, equal to 56 pounds in the U.S., used for volumes of dry commodities such as corn.

Profits

The financial gains obtained when the revenues from a business activity exceed the expenses, costs, and taxes needed to sustain the activity.

Wage Rate

The standardized amount of compensation received by an employee for performed work per unit of time, typically expressed per hour or year.

Bushel of Corn

A unit of measure for volumes of dry commodities, typically used in the U.S. for agricultural goods like corn, where one bushel equals approximately 56 pounds.