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GS Geography Physical Geography of World
Q.

What process takes place during the youthful stage of a river?
Explanation:

ANS. (C) 
The youthful stage of the river is when water flow is the quickest. Because of steep slope and steep channel gradient in this stage, rivers actively deepen their valleys through vertical erosion. The valley becomes deep and narrow characterized by steep valley side slopes of convex plan. Waterfalls, V-shaped valleys and interlocking spurs are features of this stage.

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