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Erosion
Winds and waves are the major contributors of beach erosion. Over building by people close to the shore causes erosion to speed up.
The type of erosion that causes sand is water erosion.
Sunlight
some external causes are wind, water, ice, and humans.
Deterioration on the edges and peninsulas of our land.
The answer is Erosion.
erosion doesn't effect wind, wind causes erosion
Gully erosion, a type of water erosion.
wind, air, and ice cause erosion.
erosion causes floods,
water erosion