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

Fact 2: Energy is measured in Joules.

Given the two facts above, answer the question "What measurement is used for something plants use unsaturated fatty acids to store?" with the following options: 
- amperes
 - heat
 - volts
 - seconds
 - vitamin C
 - electron
 - glucose
 - joules


 

        joules 