How does sulfur in coal contribute to the acidity in rainwater? (7 pts) if gasoline produces only carbon dioxide and water when it burns completely, why is automobile exhaust a source of air pollution even before it begins to react with other chemicals in the air? (7 pts) state which of the following processes are potential sources of gaseous air pollutants, particulate air pollutants, both, or neither: gravel is screened to separate sand, small stones, and large stones into different piles. (3 pts) a factory stores drums of liquid chemicals outdoors. some of the drums are not tightly closed, and others have rusted and are leaking. the exposed liquids evaporate. (3 pts) a waterfall drives a turbine, which makes electricity. (3 pts) automobile bodies in an assembly plant are sprayed with paint. the automobile bodies then move through an oven that dries the paint. (3 pts) a garbage dump catches fire. (3 pts)