Question

How are plains formed.Name some plains

Answer 1

plains forms by the soil under the river .
Ex. Punjab is a plain
North India

Answer 2

Plains occur as lowlands along the bottoms of valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands. ... Plains may have been formed from flowing lava, deposited by water, ice, wind, or formed  by erosion by these agents from hills and mountains.

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