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Which one of the following is a matching pair?
- Tears-excretion of salts
- Sweat-thermoregulation
- Saliva-tasting food
- Sebum-sex attraction
Correct answer: Sweat-thermoregulation
Solution
Sweat is produced by sweat glands and its evaporation from the skin removes heat, helping regulate body temperature. The other options pair a secretion with a function it does not primarily perform.
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