This special project for Chemistry 101 at Parkland College illustrates how pollutants are absorbed into the air and returned to the earth through acidic precipitation. This is especially a problem in highly urbanized environments. The outline also explains cation exchange and leeching affect the environment.
Taylor, Emma L. and Xie, Hexuan, "Impacts of Acid Rain on Unnatural Metal Deposits" (2018). Natural Sciences Poster Sessions. 151.