Question

How do rivers keep northern plains fertile?

Answer 1

Explanation:

Rivers usually carry sand and silt with them by keeping the northern plains fertail.

Answer 2

Answer:

The river in the plains flows slowly as it carries a lot of debris , rocks ,fine silt and keep on shedding at the river bank. This deposit of fine silt ,clay and gravel is called alluvium which is extremely fertile and ideal for growing crops.

Explanation:

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