A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. Using these birth and death rates, calculate the total number of individuals added to (or lost from) a population of 1,000 individuals in one year.
A) 120 individuals added
B) 40 individuals added
C) 20 individuals added
D) 400 individuals added

Question

Quizplus · Accepted Answer

The net growth rate is the birth rate minus the death rate, which is 0.06 - 0.02 = 0.04. For a population of 1,000 individuals, the number added in one year is 1,000 * 0.04 = 40 individuals.

A Population of Ground Squirrels Has an Annual Per Capita