Question

why are the northern mountains fertile​

Answer 1

Answer:

The silt deposited by river Ganga and its tributary makes the plain fertile. northern plain fertile because when the river ganga flow there it cannot carry so much silt with it so it deposits it on the bank so they are fertile since they carry alluvium with them . Thus the northern plains are very fertile.

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Answer 2

Explanation:

The great rivers and their tributaries carry enormous quantities of alluvium while descending from the Himalayas. This is deposited in the Great Plain of North India in the form of fertile soil, making the plain one of the most fertile lands of the world.