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Sweat glands can produce sweat at the rate of one litre/ hour. After evaporation of sweat, the body is effectively cooled down. This happens in hot and dry climate, provided the air flow is there. (Hot and humid climate is not suitable for human residence. Though 100's of millions people live in such climate.) You have modified sweat glands called as apocrine glands present in armpits and few other places of body. They function as secondary sex character.

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12y ago

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