precipitation with a pH less than 5.6 (the pH of normal tap water) that forms in the atmosphere when certain pollutants mix with water vapor. The major sources of acid rain pollutants are sulfur dioxide and nitrogen oxide emissions from fossil fuel-burning power plants and motor vehicles.
pltintern
Christine Song supports both Project Learning Tree (PLT) US and Canada's program delivery and reporting, program research, and communications. Christine holds a Master of Environmental Science from the University of Toronto and and a combined degree with a Bachelor of Science in ecology and zoology and a Bachelor of Science in anthropology from the University of Calgary.
