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Question
How is a waterfall formed?
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Solution
A waterfall is formed due to large differences in the rate of erosion. When a river flows over a layer of hard rock and then reaches a softer rock underneath, the softer rock erodes more quickly, creating a vertical drop. This drop is the waterfall. At the base of the waterfall, a plunge pool may develop as the water continues to erode the soft rock. Over time, this process leads to the formation of a waterfall.
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