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प्रश्न
Why can a water spider walk comfortably on the surface of still water?
लघु उत्तरीय
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उत्तर
A water spider can walk comfortably on the surface of still water because of the surface tension of water. The water surface behaves like a stretched elastic membrane and supports the spider’s small weight. Its legs also do not get wet easily, so they do not break the water surface. As a result, the spider can move across the surface without sinking.
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