cars, homes, and trees. In some cases, these particles can eat away
             the objects on which they land on. Dry deposited gases are sometimes washed from trees and
             other surfaces by rainstorms. When this occurs, the runoff water adds the new acids to the
             acid rain, making a more acidic combination than the falling rain by itself. One of the main
             causes of acid rain is sulfur dioxide. Sulfur dioxide is one of the main ingredients
             ...