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iii) write short notes°n :(a) Waterfallb) Potholes

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Awaterfallis a river or other body of water's steep fall over a rocky ledge into a plunge pool below. ... This happens both laterally (as a stream flows across the earth) and vertically (as the stream drops in awaterfall). In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls



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