What is the main cause of acid rain?

Related questions

1. What happens if you drink acid rain?
2. What happens to clouds after it rains?
3. Do clouds disappear after rain?
4. Is acid rain still a problem in New England?
5. Is acid harmful?
6. What does acid rain effect?
7. Why is acid rain harmful?
8. What is the pH of acid rain?
9. Is acid rain still a concern?
10. What causes less rainfall?

Tags

1. #sulfur
2. #chemicals
3. #solution
4. #oxygen
5. #pollution
6. #forms
7. #mixture
8. #create
9. #water
10. #nitrogen
11. #nitric
12. #sulfuric
13. #usually
14. #oxidants
15. #clouds
16. #react
17. #oxides
18. #dioxide
19. #where