Weathering: Glaciers scraping rocks across the Earth's surface., Water freezing in the cracks of rock, expanding and splitting it., Wind carving out arches in rock., Erosion: Rainwater carrying soil away from a hill., Gravity causing a landslide to take out everything in its path., Wind blowing sand from one place to another., Waves washing sand away from a sand dune., Deposition: Waves dropping sand to form sand bars., Deltas developing at the mouth of the river., Sand dunes forming in the desert., Sediment falling in layers at the bottom of the ocean.,

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