Question

what happens to the size of a population if the birth rate decreases while the death rate remains the same?
a. it decreases
b. it stays the same
c. it increases, then decreases
d. it increases

Explanation:

Population size change depends on the difference between birth rate and death rate. If birth rate decreases while death rate stays the same, the number of new individuals added to the population reduces relative to the number of individuals leaving (via death). This leads to a net decrease in population size.

Answer:

A. it decreases