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What is the main reason for meander formation in the plains of Himalayan rivers?

Answer and explanation

Correct answer: The flow becomes slow because slope is gentle

Direct answer: A, the flow becomes slow because the slope is gentle. In the upper mountains, steep slopes make rivers cut downward. In the plains, the slope is much gentler, so water loses speed and energy. The river erodes its banks unevenly: faster flow cuts the outer bank, while slower flow deposits sediment on the inner bank. Repeated erosion and deposition make a winding meander. A is correct. B is wrong because the plain has a gentle, not very steep, slope. C is wrong because a river does not become a glacier in the plains. D is wrong because rivers rise from land sources, not from the sea. Memory cue: gentle slope, slow flow, sideways erosion and deposition produce meanders.

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MeandersPlainsGanga

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