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Rivers A-Z


Alluvium   Sediments, such as silt, sand and gravels, carried by a river that it has dumped on its bed, its floodplain or its delta as its current slows down. The deposit of alluvium made where a river or stream enters a plain or open valley may form the shape of a fan, and is called an alluvial fan.  

WHY IS THE SEA SALTY?


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