What is the main function of a river in its upper course ?mention some of the distinctive feature apparent at this stage
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The main function of a river in its upper course is that the vertical erosion is great in this part of the river.
Some features of the distinctive feature apparent at this stage are:
1) The gradient here is steep.
2) The river channel is narrow.
3) A perpendicular sided V-shaped valleys are formed.
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Answer: The main function of a river in its upper course is erosion. It erodes its bed and banks and carries large boulders of rock with it. The landforms formed in the upper course of a river are V-shaped valley and waterfall.
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