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26 August, 01:35

Which is most likely cause of springtime flooding in a river valley?

A.

rapid snow melt in regions upstream

B.

erosion of the natural stream channel

C.

moderate rainfall in the region

D.

an increase in sediment load

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Answers (2)
  1. 26 August, 02:36
    0
    the answer is A the rapid snow melting in regions up stream cause major flooding downstream.
  2. 26 August, 05:10
    0
    A. Rapid snow melt in regions upstream

    Explanation:

    "Rapid snow melt" in the upstream regions is most likely the cause of spring time flooding in a river valley. The effects of rapid snow melt are different for different areas. But in the upstream region it is a concern. In the spring time the rapid snow melting has become a cause of concern for many people around the world. But besides flooding snow melting can cause "landslides and debris flows" too. In the "alpine regions" like "Switzerland", snowmelt is a major cause for the runoff. Snow melting in such regions with the combination of rain can cause disastrous floods.
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