Question

northern plans have fertile alluvial soil? give reason

Answer 1

There are some river flow to the northern plain eg ganga river and yamuna

Answer 2

Because The Northern Plain was formed by the deposits brought in by the three major rivers and their tributaries. Alluvium was deposited at the foot–hills of the Himalayas for millions of years. These deposits are now the fertile Northern Plains. Alluvium is soil or sediments deposited by a river or other running water.