Chapter 11, Problem 8CR

To determine

The method used by streams to cleanse themselves of oxygen-demanding wastes, and the reason to support that these cleansing processes can be overwhelmed. The term wastewater. The state of stream pollution in both less-developed and more-developed countries. The right idea to support that lakes and reservoirs cannot cleanse themselves of pollutants. Differences between eutrophication and cultural eutrophication. The ways to prevent cultural eutrophication. The primary sources of groundwater pollution in the United States. The reason to support that groundwater cannot cleanse itself. The methods to prevent groundwater contamination and to purify drinking water. The process of purification of drinking water in both less-developed and more-developed countries. The environmental problems caused by the use of bottled water. The laws established in the United States to protect drinking water. The methods to strengthen U.S Safe Drinking Water Act. The role of lead in threatening drinking water in the United States.