Moving Between Two Points on a PPF,a Country Gains 6

question 18

Multiple Choice

Moving between two points on a PPF,a country gains 6 automobiles and forgoes 3 trucks.The opportunity cost of 1 automobile is

• A) 3 trucks.
• B) 6 automobiles - 3 trucks.
• C) 2 trucks.
• D) 1/2 of a truck.
• E) 1 automobile.

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Definitions:

Gametic Isolation

A prezygotic reproductive barrier where genetic differences prevent gametes from different species from fusing to form a zygote, thus preventing inter-species reproduction.

Behavioral Isolation

A form of reproductive isolation where two populations develop differences in courtship rituals or behaviors that prevent them from mating.

Mating Signals

Behavioral, physical, or chemical signals used by animals to attract or communicate with potential mates.

Courtship

A period during which individuals of many species perform specific behaviors to attract mates.