Answers

2015-07-05T18:02:37+05:30
The northern plains are called deposited plains because these plains in the past were formed due to deposition of many rivers in the past. there formation is still going on
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2015-07-05T20:50:29+05:30
This is because northern plains is made upon alluvial soil. Alluvial soil is deposited onto the northern plains because of 3 Himalayan river system: Ganga, Bhramaputra and Indus. Hence it is called deposited plains.
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