Sweat wets the skin, and when it evaporates, it cools the body, and perspiration There are about 2 million sweat glands in the average human body. Given these facts, what wets the skin, and when it evaporates, it cools the body among the following options:
- heat energy
 - acetic acid
 - Air conditioner
 - salt and water.
 - Skin oil
 - water vapor
 - Perspiration
 - A towel


 

       Perspiration  