Rain or snow break rocks.
Weathering.
Ice breaks rocks.
Weathering.
Rocks move because of gravity.
Erosion.
Wind moves rocks and dirt.
Erosion.
Rocks break.
Weathering.
Rocks stop moving.
Deposition.
People climb and move rocks.
Erosion.
Water like an ocean wave breaks rocks.
Weathering.
Rocks stop moving and make sand dunes.
Deposition.