What accounts for most rock and regolith movement in mountains?

Question

Quizplus · Accepted Answer

Mass movements such as landslides, rockfalls, and avalanches are the primary causes of rock and regolith movement in mountains. While rivers and streams and weathering and erosion play a role in shaping mountain landscapes, they do not cause as much movement as mass movements. Earthquakes can also trigger mass movements, but they do not account for most of the movement on their own.

What Accounts for Most Rock and Regolith Movement in Mountains