Question

what is the main cause of mass wasting?
a. gravity
b. chemicals
c. biology
d. glaciers

Explanation:

Mass wasting is the movement of rock and soil down - slope under the influence of gravity. Gravity is the driving force behind mass wasting processes like landslides, mudflows, etc. Chemicals, biology, and glaciers can be contributing factors in some cases but are not the main cause.

Answer:

A. Gravity