Has there ever been acid rain?

Related questions

1. Why is rain so important?
2. What causes it not to rain?
3. Why does it always rain after a fire?
4. Can acid rain burn your skin?
5. What animals are most affected by acid rain?
6. Why is rain called rain?
7. Does acid do brain damage?
8. How can we reduce acid rain?
9. What is the main cause of acid rain?
10. How can we neutralize acid rain?

Tags

1. #rainwater
2. #burning
3. #problem
4. #dioxide
5. #sulfur
6. #height
7. #united
8. #lowered
9. #northeastern
10. #decreased
11. #raining
12. #drifted
13. #atmosphere
14. #states