In addition to water, sweat contains mainly

  • A. glucose and protein
  • B. urea and hormones
  • C. amino acids and fats
  • D. mineral salts and a little urea

Explanation

Sweat is mostly water with dissolved salts and traces of urea, so sweating causes both water and salt loss that must be replaced. It is a cooling mechanism first and an excretory route second.

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