I have always wondered what acid rain is and where it comes from. The stuff in the acid rain comes from volcanoes and decaying vegetation and human made things. With wet disposition chemicals can be blown away and land where it is wet in come down as acid rain, snow, etc. And with dry disposition the chemicals can be dust. Acid rain is basically water droplets with chemicals and pollution in it.
Image Credit:http://undertheangsanatree.blogspot.com/2013/07/acid-rain-causes-history-and-effects.html
Sources:
http://geography.about.com/od/globalproblemsandissues/a/acidrain.htm
http://www.epa.gov/acidrain/what/
