Question

what is the difficult to walk on sandy surface for a man while easy for camel

Answer 1

The hoofs (feet) of a camel have very large surface area. Being a massive animal it exerts small pressure on the surface of sand on account of its larger hoof area and consequently it does not sink in sand. While feet of a man has very small surface area, so he exerts larger pressure on sand and is likely to sink in sand.

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