The presence of coal in the crust indicates that thick forests and wetlands occurred in that area long ago.

Question

Quizplus · Accepted Answer

Coal is formed from the remains of plants, specifically the woody tissues of trees and the organic matter found in wetland environments, that have undergone a process of burial, heat, and pressure over millions of years. Therefore, the presence of coal suggests that there were dense forests and large wetlands in the region where it was formed.

The Presence of Coal in the Crust Indicates That Thick