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

Fact 2: Fur or feathers help hold heat in, but some body heat always escapes.

Given the two facts above, answer the question "What does fur do?" with the following options: 
- it serves as food
 - refract or absorb.
 - It helps them survive
 - absorb light energy
 - it catches fire
 - it drowns the organism
 - structure and function
 - it keeps an organism warm


 

        it keeps an organism warm 