Geography [2 Mark Question Answer]

Wind erosion is most predominant in arid regions. Since there is little vegetation or moisture to bind the loose surface materials, the effects of wind erosion are more pronounced in the desert region.

The two landforms resulting from erosion in the upper course of a river are the following :

1. V-shaped Valleys: It is formed from a stream eroding downward, through a process, called down cutting. These valleys are formed in the initial stages of rivers and have steep slopes.
2. I-shaped Valley: In regions of hard rocks it develops almost vertically in an I-shape. River valleys are normally formed in areas of sufficient rainfall and where rocks are not very hard or resistant.

Denudation is the wearing away of landmass by various processes like weathering, erosion mass movement, and transportation. It results in lowering the level of the land, rounding exposed rock surfaces, and leveling the peaks.