Question

What is the shape of river valley ?​

Answer 1

In polar areas and at high altitude, valleys may be eroded by glaciers; these typically have a U-shaped profile in cross-section, in contrast to river valleys, which tend to have a V-shaped profile.

Answer 2

In polar areas and at high altitude, valleys may be eroded by glacier; these typically have a U- shaped profile in cross-section, in contrast to river valleys which tend to have a V - shaped profile.