Sweat wets the skin, and when it evaporates, it cools the body, and sweat is made of salt and water. Given these facts, what wets the skin, and when it evaporates, it cools the body among the following options:
- Heat energy
 - salt and water
 - acetic acid
 - urine
 - ice
 - Chlorophyll
 - white vinegar
 - blood


 

  salt and water       