Emigration and immigration are assumed to be equal in a population whose per capita growth is being estimated.However, if a population is experiencing more emigration than immigration, estimation of population size according to the equation r = b - d will cause the population size to be
A) underestimated.
B) overestimated.
C) accurately estimated.
D) impossible to determine.
E) exploding.

Question

Quizplus · Accepted Answer

The equation r = b - d (where r is the per capita growth rate, b is the birth rate, and d is the death rate) does not account for emigration and immigration. If a population is experiencing more emigration than immigration, the actual population size will decrease more than predicted by this equation, leading to an overestimation of the population size.

Emigration and Immigration Are Assumed to Be Equal in a Population