... grow, their sewage treatment facilities are quickly outgrown. Industry grows as well, spewing a vast array of contaminants into our water supply: lead, detergents, sulfuric acid, hydrofluoric acid, phenols, benzenes, ammonia and so on(Ehrlich and Ehrlich, 1970, p.203). As population and industry grow, so does the need for increased agricultural production ... generating plants, smelters, and industrial boilers that burn coal and oil. Nitrogen oxides also come from automobile exhaust. The acids return to earth in rain, snow, and fog, and are also deposited directly from the air and trees....

• Word Count: 3065
• Approx Pages: 12
• Has Bibliography
• Grade Level: High School

... flexibility as to where reductions are made. A similar system reduced the cost of meeting sulfur dioxide emission requirements in the United States. Sulfur dioxide, produced when coal is burned, causes acid rain. The treaty also provides for a system of "joint implementation," in which industrialized countries could receive credits to emit excess greenhouse gases if they sponso! red clean-energy projects in the ... ...

• Word Count: 3060
• Approx Pages: 12
• Has Bibliography