- Oil is a source of gasoline
- Oil is a kind of fossil fuel
- Therefore, gasoline is kind of fossil fuel

- Gasoline is kind of fossil fuel
- Gases released during the use of fossil fuels causes global warming
- So, gasses released during the use of gasoline causes global warming

Hence, gasses released during the use of gasoline causes global warming
Question
Gasoline for cars is produced from fossil fuels. Using gasoline can most likely lead to which environmental problem?

Context
- Gases released during the use of fossil fuels causes global warming 
- Oil is a source of gasoline 
- Oil is a kind of fossil fuel