Question 31

(Multiple Choice)

A population of birds migrating to winter nesting grounds is blown off course by a late- season hurricane and ends up on an island that is uninhabited by any animal species. Which of the following represents a density- independent factor that will limit the population size?


A) Heavily wooded
B) Abundant fruit trees
C) Freshwater spring
D) Abundant berry bushes
E) Nightly temperature dropping below freezing

Answer