## Chemistry: Molecular Approach (4th Edition)

Acid rain is able to dissolve metals present in bridges, railroads and automobiles. It also reacts with carbonate ions, harming marble, cement and limestone structures. If the rain falls into rivers and lakes, it can decrease the pH of water, harming the aquatic life. Trees also are damaged by the acid present in the soil after the acid rain. In order to address and reduce the problem of acid rain, the U.S. Congress passed amendments to the Clean Air Act. They forced electrical utilities to lower their $SO_2$ emissions, which decreased the pollutant levels by 76% in the U.S. since it was implemented. This had effects on the acidity of rain and the recovery of lakes.
Acid rain is able to dissolve metals present in bridges, railroads and automobiles. It also reacts with carbonate ions, harming marble, cement and limestone structures. If the rain falls into rivers and lakes, it can decrease the pH of water, harming the aquatic life. Trees also are damaged by the acid present in the soil after the acid rain. In order to address and reduce the problem of acid rain, the U.S. Congress passed amendments to the Clean Air Act. They forced electrical utilities to lower their $SO_2$ emissions, which decreased the pollutant levels by 76% in the U.S. since it was implemented. This had effects on the acidity of rain and the recovery of lakes.