Its gravity


Its what brings it down example you drop a rock it falls thats deposition. Weathering breaks it erosion takes it deposition drops it. It drops all natural things like snow,dirt,stone,sediment.
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Deposition happens every time erosion happens!!!!!!!.Deposition is the opposite effect of erosion.(erosion=destructive deposition=constructive)

Several factors affect when and where deposition occurs once sediment has been eroded.The process of deposition creates many types of landforms on earth. Rockslides on hills and mountains are created as gravity erodes and deposits rocck