You are presented with the question "What does burning oil cause?" and the following answer choices: 
- Clean water
 - Dehydration
 - More oil
 - chemical reaction
 - Global warming
 - forest is destroyed
 - An ice age
 - hyperthyroidism

Now knowing that gases released during the use of fossil fuels causes global warming and carbon dioxide is produced by the burning of fossil fuels such as coal, oil and natural gas, choose the best answer.


 

     Global warming    