Fact 1: Operating an automobile usually requires fossil fuels.

Fact 2: Automobiles and the burning of fossil fuels generate gases such as sulphur dioxide.

Given the two facts above, answer the question "What does an automobile create when it burns fuel?" with the following options: 
- Acids
 - tar
 - Energy.
 - heat
 - Gases
 - gas
 - sweat
 - energy


 

     Gases    