Question

narrow v shaped valleys are found in the _____ course of a river.​

Answer 1

Narrow v shaped valleys are found in the lower course of a river
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Answer 2

Rivers begin high up in the mountains so they flow quickly downhill eroding the landscape vertically. The river cuts a deep notch down into the landscape using hydraulic action, when the sheer force of the water gets into small cracks and breaks down the sides of the river valley.