Question

How are alluvial plains formed? Name
any two such plains.​

Answer 1

An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. ... As the highlands erode due to weathering and water flow, the sediment from the hills is transported to the lower plain. examples include Sawad in Mesopotamia, Punjab in India, the Indo-Gangetic Plain across India, Bangladesh, and Pakistan, Po Valley in Italy, Oxnard Plain in California, and many others around the world.
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