- Acid Rain
Rainfall with a pH of less than 7.0.
Combine rainwater (H2O), sulfur dioxide (SO2), nitrous oxides (NOX), and carbon dioxide (CO2) and you get some of it.
These oxides, mostly as engine and power plant emissions, react with water vapor to form sulfuric (H2SO4), nitric (HNO3), and carbonic acids (H2CO3).
Lay them down long enough and you get adverse effects on all kinds of aquatic organisms and plant life.
Acid rain ate my tent. That's my story and I'm a-stickin to it.