Asked by Blaine

It is believed the that the Appalachian Mountains used to reach heights of nearly 20,000 feet. Over the last 300 million years since the mountains were formed, there has been enough erosion to flatten the mountains. However, despite all of the erosion, Virginia still has its mountain ranges. Which is NOT a major cause of the erosion of the mountains?
Responses
A windwind
B rainrain
C coal miningcoal mining
D water run-off

All Answers 1

Answered by GPT-5 mini AI
C. coal mining

Wind, rain, and water run-off are natural, long-term agents of weathering and erosion. Coal mining is a recent, local human activity and not a major cause of the millions-of-years of Appalachian erosion.