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. Given these facts, what does burning oil cause among the following options:
- Clean water
 - Dehydration
 - More oil
 - chemical reaction
 - Global warming
 - forest is destroyed
 - An ice age
 - hyperthyroidism


 

     Global warming    