Question

The northern plains are generally described as flat land with no variations in its relief justify that the above statement is not true

Answer 1

I think this might help you.
This extensive plain is level and monotonous; it is characterized by some local diversities. Hence, it may be classi­fied into three divisions:

The Punjab plain drained by the Indus,The Ganga plain drained by the Ganga andThe Brahmaputra valley drained by the Brahmaputra.