Fact 1: Preventing the transfer of heat from an organims 's body causes that organism to keep warm.

Fact 2: Dirt can keep animals warm.

Given the two facts above, answer the question "What can an prevent the transfer of heat from an organism's body?" with the following options: 
- Sulfur
 - cilia
 - skin
 - dirt
 - oil
 - immune
 - fur
 - fats


 

    dirt     