In a typical forest ecosystem, dead trees and fallen trees are most important because of their role in which of the following?
a. providing a valuable source of timber
b. providing habitats for wildlife
c. contributing to soil erosion
d. removing carbon dioxide from the air

b. Providing habitats for wildlife

Explanation:

Dead trees and down wood provide wildlife habitat it is estimated that 2/3 of all wildlife use them at least during one point of their life cycle. They also serve to cycle nutrients, decreasing erosion, etc.

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