How many acres of forests in North America have been adversely affected by acid rain?

Answer 1

Acid rain affects trees and forests by limiting the amounts of nutrients that they obtain from the soil. Acid rain has affected thousands of acres in the United States, mainly affecting the higher elevations of the Appalachian mountains.

Answer 2

Well, Most of them are because clouds that contain acid rain can travels hundreds of miles or more. There probably isnt one spot that has not been effected by acid rain somehow.