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From where do Himalayan rivers bring sediments?

Answer and explanation

Correct answer: From erosion of mountain rocks

Sediment means loose material such as pieces of rock, gravel, sand and silt. Himalayan rivers flow through young, high mountains where slopes are steep and rocks are exposed. Running water, weathering, landslides and other forms of erosion break and remove rock material. The river then carries these particles downstream. Thus, the sediments in Himalayan rivers mainly originate from the erosion of mountain rocks and surrounding slopes.

Option A is correct. Sea ships do not supply the natural sediment load of a river, and material does not come directly from the sky. City lights have no physical role in producing river sediment. In the upper course, strong slope and swift flow help the river remove material; farther downstream, some of that material may be deposited when the river loses energy. The essential geographical connection is erosion in the mountains followed by transportation of sediment by the river.

Related tags

SedimentErosionMountain Rocks

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