Which physical feature was once covered by the sea? A) Tallulah Gorge
B) Stone Mountain
C) The Okefenokee Swamp
D) The Appalachian Mountains

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Answer carbon dioxide ice;

F=31 because you subtract 39-8

According to new research, more than 5..5 million deaths are associated with polluted air. hope this : ).