weathering, the breaking down of rock into smaller pieces, erosion, the moving of broken sediment by wind, water and ice, deposition, the dropping of sediment into a new location, sediment, smaller pieces of rock like sand, pebbles, gravel, compaction, the pressing together of different layers of sediment deposited over millions of years, cementation, water mixes with sediments and are hardened by crystals that form, U-shaped valley caused by, glaciers, canyons caused by, moving water, delta caused by, as river flows into an ocean, arches and sand dunes caused by, blowing wind, mesas and butted are, flat topped landforms

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