Fact 1: Alight bulb converts electrical energy into light energy when it is turned on.

Fact 2: Fluorescent light bulbs use half the electricity of standard bulbs.

Given the two facts above, answer the question "What do flourescent bulbs do?" with the following options: 
- Change colors
 - reproduce
 - staying warm
 - dormant state
 - direct energy
 - spread flower seeds
 - use less energy
 - duplicate itself


 

       use less energy  