Environmental Science 14th Edition by Tyler Miller ,Scott Spoolman

Exercise 11

Describe how streams can cleanse themselves and how these cleansing processes can be overwhelmed. What is wastewater Describe the state of stream pollution in more-developed and less-developed countries. Give two reasons why lakes cannot cleanse themselves as readily as streams can. Distinguish between eutrophication and cultural eutrophication. List ways to prevent or reduce cultural eutrophication. Explain why groundwater cannot cleanse itself very well. What are the major sources of groundwater contamination in the United States List three ways to prevent and three ways to clean up ground-water contamination. Describe the U.S. laws passed to protect drinking water quality. Describe the environmental problems caused by the widespread use of bottled water.