Environmental Science 15th Edition by Scott Spoolman,Tyler Miller

Exercise 16

Explain how streams can cleanse themselves and how these cleansing processes can be overwhelmed. What is wastewater ? Describe the state of stream pollution in more- 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 ways to prevent or clean up groundwater contamination. List some ways to purify drinking water. Describe the environmental problems caused by the widespread use of bottled water.