At the start of a study, 200 spotted owls lived in an old-growth forest patch in western Oregon. During the next year, a biologist tracking the birds observed that 25 new birds hatched and 5 died. What was the growth rate (r) for this year?
A) 20
B) 200
C) 5
D) 25
E) 0.1

Question

Quizplus · Accepted Answer

The growth rate (r) is calculated as the change in population divided by the initial population size. Here, the change is 25 hatched - 5 died = 20. So, r = 20 / 200 = 0.1.

At the Start of a Study, 200 Spotted Owls Lived