Question

give one characteristic feature of the northern plains

Answer 1

Located below the Northern mountains
It is very fertile
Rich in alluvial soil
population is really high

Answer 2

Northern plains are suited near the ganga valley river and due to this in northern plains alluvial soil is found which is rich in many nutrients and is suitable to grow wheat and sugarcane mostly.It is found in northern India like Punjab,haryana ,Bihar but it is not found in hilly Ares like uttarkhand and himachal etc..