A stable population would remain at equilibrium if
A)the birth rate increased as the death rate decreased.
B)emigration rates and death rates increased equally.
C)births and immigration increased by the same number of organisms.
D)births and deaths increased by the same number of organisms.

Question

Quizplus · Accepted Answer

A stable population requires that the number of births and deaths are equal in order to maintain a constant population size. Therefore, if births and deaths increase by the same number of organisms, the population will remain at equilibrium. The other options involve changes to only one factor (birth rate, death rate, emigration rate, or immigration rate) which will cause a shift in population size and therefore not maintain equilibrium.

A Stable Population Would Remain at Equilibrium If