(A) Layers of sediment formed by rivers
(B) Deposits of rock and debris left by glaciers
(C) Erosion caused by wind in deserts
(D) Volcanic materials ejected during an eruption
(A) Layers of sediment formed by rivers
(B) Deposits of rock and debris left by glaciers
(C) Erosion caused by wind in deserts
(D) Volcanic materials ejected during an eruption
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