An ecologist is studying the painted turtle population in a small pond. At the beginning of the year, there are 100 individuals. Over the course of a year, 40 turtles are born and 60 die. There is no migration. What is the growth rate (r) of the painted turtle population?
A) -0.2
B) 0.2
C) 0.4
D) -0.4
E) 0.6

Question

Quizplus · Accepted Answer

The growth rate (r) is calculated as the change in population size divided by the initial population size. Here, the change in population size is 40 born - 60 died = -20. Therefore, the growth rate is -20/100 = -0.2.

An Ecologist Is Studying the Painted Turtle Population in a Small