Jacob is studying a population of wrens in Michigan.During one severe winter,5% of the birds died due to starvation and cold temperatures.This is an example of
A) a density independent factor.
B) a negative growth rate.
C) a density dependent factor.
D) an opportunistic population.
E) logistic growth.

Question

Quizplus · Accepted Answer

A density independent factor affects a population's growth rate regardless of its size or density. In this case, the severe winter and cold temperature affect all the birds in the population equally regardless of their density or size. Therefore, the death of the birds is an example of a density independent factor.

Jacob Is Studying a Population of Wrens in Michigan