Category: Population and the Environment

A. human populations tend to increase more slowly than their ability to increase the food supply.
B. agricultural production increases in a geometric fashion.
C. people could use “moral restraint” to reduce the birth rate.
D. famine war and pestilence are social problems that a population can overcome.

A. USA
B. Mozambique
C. Canada
D. Sweden

A. cosmopolites
B. ethnic villagers
C. urban villagers
D. the trapped

A. they are produced by techniques of cross-breeding
B. they are capable of drastically improving agricultural yields
C. they involve transplanting genes between different organisms
D. they have become front-page stories in the news everyday