Fact 1: Head hair is especially important in preventing heat loss from the body.

Fact 2: Almost half the body heat lost in cold conditions escapes from the head.

Given the two facts above, answer the question "Which type of hair is most important in cold conditions?" with the following options: 
- layers of fat
 - facial hair
 - toe hair
 - fur seals
 - Head hair
 - staying warm
 - arm hair
 - rabbit


 

     Head hair    