Help, How can I explain how the Appalachian mountains were formed?

After rain, water soaks into the ground and is added to the groundwater. this process is known as a. groundwater pollution. b. groundwater recharge. c. groundwater recycling. d. groundwater filtration.

Mount saint helen the great lakes and death valley are physical features of the earth which scientific term describes these features

What gpa will you get if you make all a's and 1 b?