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What does a V-shaped valley made by a river indicate?

Answer and explanation

Correct answer: Strong vertical erosion in the upper course

Direct answer: Option A, strong vertical erosion in the upper course. In the upper course, a river usually flows down a steep slope with considerable energy. It cuts downward into the bed rather than spreading widely sideways, producing a narrow valley with sloping sides that looks like the letter V. A is correct. B describes deposition more commonly associated with slower lower-course areas, not the main cause of a V-shaped valley. C, sea tides, does not form the typical upper-course valley. D is wrong because a valley requires active flowing water and erosion, not completely still water. The shape is an indicator, though local conditions can vary. Memory cue: youthful river, steep slope, vertical erosion, V-shaped valley.

Related tags

GeographyDrainageRivers

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