Fact 1: Plants use unsaturated fatty acids to store energy.

Fact 2: All oaks are plants.

Given the two facts above, answer the question "What uses unsaturated fatty acids to store energy?" with the following options: 
- algae
 - humans
 - Trees
 - oaks
 - shrews
 - asses
 - Cane.
 - fens


 

    oaks     