some rocks have a shape of mushroom ...give reason
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When’ rocks fall in the course of running dust-storms, the suspended particles of sand strike the lower portion of the rocks and erode them. The upper portions of the rocks remain unaffected/uneroded. In course of time the rocks take up the shape of a mushroom.
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Answer: (i)Some rocks have a shape of a mushroom because winds erode the lower section of the rock more than the upper pa. ... Therefore, such rocks have narrower base and wider top (ii)Floodplains are very fertile because floods deposit layers of fine soil and other material.
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