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

Fact 2: Wood can help Fire to burn.

Given the two facts above, answer the question "What can convert chemical energy into light and heat energy?" with the following options: 
- engines
 - Hot water
 - Burning wood
 - Firecrackers
 - sound
 - Green beans
 - cigarettes
 - science


 

   Burning wood      