Question

what is difference between the alluvial soil found in the upper courses of rivers and that found in the lower courses?

Answer 1

-The alluvial soil found in upper course is coarse in texture due to the lack of replenishment by the water whereas alluvial soil found in upper coarse is Finer in texture due to replenishment by the water.
2---The alluvial soil found in upper coarse is lighter in color whereas alluvial soil found near the water is darker in color.
3---The alluvial soil found in the upper coarse is less fertile whereas the alluvial soil near the water is more fertile.

Hope it will help u.