Question

the size of a population can get smaller with no influences from migration if birthrate __ or death rate __. a. decreases; increases b. increases; decreases c. levels off; increases d. increases; levels off

Explanation:

Population size is affected by birth and death rates. A decrease in birthrate (fewer new individuals) and an increase in death rate (more individuals dying) would lead to a smaller population size without migration influence.

Answer:

A. decreases; increases