This site is everything you'll need to know about acid rain.
Acid rain is created by chemicals and pollutants in the air. Signs of acid rain are when your car paint is chipping and you see buildings fading. Ecosystems can become damaged as well and the animals that live in them could die. Acid rain doesn't look any different than normal rain, yet it is very acidic. It has a pH level of about 5.5. It can result in weak bridges, roads, and highways. When humans start breathing the air from acid rain it can lead to lung cancer and other diseases. Acid rain is a subject researched by many scientists, chemists, economists, biologists, and regular people wanting to learn more about the mysterious acid rain.