Waste from nuclear power plants Spills from chemical manufacturing plants Gases from burning fossil fuels Gases from aerosol spray cans
I gave my students this multiple choice question: One of the main causes of acid rain is

Only one answer is correct among these 4 choices:
- Waste from nuclear power plants
- Spills from chemical manufacturing plants
- Gases from burning fossil fuels
- Gases from aerosol spray cans

Could you tell me which one is correct?

Gases from burning fossil fuels