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How is sweat ...

Question

How is sweat useful for us?

A

It removes wastes

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B

It cools us down

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C

Neither A nor B

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D

Both A or B

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Solution

The correct option is D
Both A or B

Sweat removes salts and lactic acid along with water so when it evaporates it cools us down. Sweat glands pass out sweat only when required. This is the reason why we sweat more in summers than in winters.

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