Explain why a river channel in the lower course tends to be wider than in the upper course?
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The water in the upper course posses immense velocity and flows with great speed. Arising through small narrow streams, it slowly gain potential and reach the most active phase of its journey.
The fast flowing water carries silt, erodes the banks to form a wide open channel for its large water volume.
The fast flowing water carries silt, erodes the banks to form a wide open channel for its large water volume.
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