Living in the Environment 18th Edition by Tyler Miller,Scott Spoolman

Exercise 9

What are the two key concepts for this section Explain how streams can cleanse themselves and how this cleansing process can be overwhelmed. Describe the varying states 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 how seasonal dead zones form in the Gulf of Mexico. Describe the pollution of the Great Lakes and the progress being made in reducing this pollution.