Question

which action is caused by gravity?
○ frost wedging
○ glaciation
○ mass wasting
○ aeolian bands

Explanation:

To determine which action is caused by gravity, we analyze each option:

• Frost wedging: Caused by freezing water expanding, not gravity.
• Glaciation: Involves glacier formation/movement, but the direct gravity - driven process here is mass wasting.
• Mass wasting: Refers to the downslope movement of rock, soil, etc., due to gravity (e.g., landslides, slumps).
• Aeolian bands: Related to wind (aeolian) processes, not gravity.

So mass wasting is the action caused by gravity.

Answer:

mass wasting (the option with "mass wasting" text)