Chapter 11, Problem 8CR

To determine

The method used by streams to cleanse themselves and the reason that these cleansing processes can be overwhelmed. The term wastewater. The condition of stream pollution in both more-developed and less-developed countries. The reason that lakes cannot cleanse themselves of pollutants as efficiently as the stream can. The differences between eutrophication and cultural eutrophication. The methods to prevent cultural eutrophication. The reason that groundwater cannot cleanse itself. The primary sources of groundwater pollution in the United States. The methods to prevent groundwater contamination and purify drinking water. The effect of widespread use of bottled water on the environment.