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								Erosion									 | 
								Process in which surface materials are worn away and transported from one place to another by agents such as gravity, water, wind, and glaciers									 | 
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								Deposition									 | 
								Dropping of sediments that occurs when an agent of erosion, such as gravity, a glacier, wind or water, loses its energy and can no longer carry its load.									 | 
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								Mass movement									 | 
								Any type of erosion tha toccurs as gravity moves materials downslope									 | 
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								Slump									 | 
								A type of mass movement  that occurs when a mass of material moves down a curved slope									 | 
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								Creep									 | 
								A type of mass movement in which sediments move sownslope very slowly; common in areas of freezing and thawing, and can cause walls, trees, and fences to lean downhill									 | 
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								Glacier									 | 
								Large, moving masses of ice and snow that change large areas of Earth's surface through erosion and deposition									 | 
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								Plucking									 | 
								Process that adds gravel, sand and boulders to a glacier;s bottom and sides as water freezes and thaws, breaking off pieces of surrounding rock									 | 
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								Till									 | 
								Mixture of different-sized sediments that is dropped from the base of a retreating glacier and can cover huge areas of land									 | 
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								Moriane									 | 
								Large ridge of rocks and soil deposited by a glacier when it stops moving forward									 | 
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								Outwash									 | 
								Material deposited by meltwater from a glacier									 | 
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								Deflation									 | 
								A type of erosion that occurs when wind blows over loose sediments, removes small particles, and leaves coarser sediments behind									 | 
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								Abrasion									 | 
								A type of erosion that occurs when windblown sediments strike rocks and sediments, polishing and pitting their surface									 | 
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								Loess									 | 
								Windblown deposit of tightly packed, fine-grained sediments									 | 
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								Dune									 | 
								Mound formed when windblown sediments pile up behind an obstacle, common landform in desert areas.									 |