A population is counted at 100 individuals in 1998. In 2006, a new count found 1,600 individuals. What is the doubling time for the population?
A)0.5 year
B)1 year
C)1.5 years
D)2 years

Question

Quizplus · Accepted Answer

First, we need to calculate the growth rate of the population.

Growth rate = (final population/initial population)^(1/number of years)

Growth rate = (1600/100)^(1/8)

Growth rate = 2

This means that the population doubled in 8 years.

Doubling time = 8/2 = 4 years

Therefore, the doubling time for the population is 4 years.

The closest answer choice to 4 years is D (2 years), which is the best choice.

A Population Is Counted at 100 Individuals in 1998