Question

define river valley​

Answer 1

Answer:

A long narrow region of low land between ranges of mountains, hills etc. often have a river stream or river valley running along its bottom. River valleies are most commonly formed through the erosion of land by rivers and glaciers.

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Answer 2

Answer:

River valley is also flow in V type vallies.

The bottom of the valley is narrow and the top of the valley is broad , maximum rivers in India flows in vallies.Like,Ganga.