Question

Why are the plain areas so fertile in india

Answer 1

The rivers of the Northern Plains carry a lot of water and fine silt. On reaching the plains the rivers slow down and deposit silt along its banks. This makes the area extremely fertile.

Answer 2

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The northern plains are mainly formed by the alluvial deposits. The northern plain has been formed by the interconnection of the three major river systems. The deposition of alluvium in a vast basin lying at the foothills of the Himalaya over millions of years formed this fertile plain.