Fact 1: Sweat wets the skin, and when it evaporates, it cools the body. Fact 2: Fig 4-23 sweat contains water, salt, lactic acid, vit. Given the two facts above, what cools the body?

I. evaporation
II. Putting heat on it
III. Movement of an air mass
IV. Starting a fire
V. Evaporation of alcohol
VI. Evaporation of water
VII. vaporization
VIII. reduced heat
Answer:
VI.