Without an Appropriate Cave or Other Underground Den Where They

Multiple Choice

Without an appropriate cave or other underground den where they can sleep through the winter,a bear will die.The abundance of caves,therefore,is a __________ factor and a(n) __________ factor influencing bear populations.

A) density-codependent;abiotic
B) density-dependent;abiotic
C) density-dependent;biotic
D) density-independent;abiotic
E) density-independent;biotic