Answer:
Erosion, Weathering
Step-by-step explanation:
The process is called weathering. Weathering is when wind beats against a rock, in this instance, for a long period of time. The rock wall gets weathered down from the wind eroding it.
Answer: erosion. Erosion is the process in which a natural agent removes material from one location to another location. Another answer could be humans. A good example is the great wall of china! The great wall of china is slowly crumbling because so many tourists step foot on it which could carry the wall's rocks or just destroy the wall. This is technically erosion but man-made.
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