Fact 1: Animals use saturated fatty acids to store energy.

Fact 2: Animals store excess energy as fat.

Given the two facts above, answer the question "Saturated fatty acids are used for:" with the following options: 
- exercise
 - Reproducing
 - solid, liquid, gas
 - energy storage
 - keeping the dog warm
 - oxidation reaction
 - an organism's body
 - Plants growth


 

    energy storage     