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

Fact 2: And since infrared energy is heat, it warms the Earth.

Given the two facts above, answer the question "What converts chemical energy into light and warmth for earth?" with the following options: 
- tulips
 - wind
 - algae
 - trees
 - earth
 - fire
 - water
 - Green


 

      fire   