Fact 1: Fire converts chemical energy into light and heat energy.

Fact 2: Fire needs fuel to burn.

Given the two facts above, answer the question "what converts chemical energy into light and heat energy?" with the following options: 
- Firecrackers
 - breathing
 - burning fuel
 - eating food
 - warmth
 - condensing fuel
 - Green beans
 - cigarettes


 

   burning fuel      