Question

______ is the main work of a river in the upper course​

Answer 1

In the upper course , the river carries sediments which are deposited layer by layer over period of time. Thus apart from having a fertile alluvial soil, they also help in land formation.

Answer 2

Answer:

In the upper course, the river carries sediments that are deposited layer by layer over a period of time. Thus apart from having fertile alluvial soil, they also help in land formation.

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