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Chapter 20

20 questions

1. Which of the following is not an example of water pollution?

2. The leading cause of water pollution is

3. Streams are able to recover most quickly when

4. The biochemical oxygen demand (BOD) of a body of water can be diagrammed with a(n)

5. Developing countries tend to have ________ water than developed countries.

6. Which of the following bodies of water is the least effective at diluting pollution?

7. The natural nutrient enrichment of a shallow lake, estuary, or slow-moving stream is known as

8. Cultural eutrophication often results in

9. Usually, the most effective and cheapest method for dealing with cultural eutrophication is to

10. In rural areas, most people obtain their drinking water from

11. Pollutants in groundwater are typically dispersed in a(n) ________ of widening, contaminated water.

12. Because of the difficulty and expense of cleaning up a contaminated aquifer, preventing contamination is the least expensive and most effective way to protect groundwater resources.

13. The ________ requires the EPA to establish national drinking water standards, called maximum contaminant levels, for any pollutants that may have adverse effects on human health.

14. The ultimate destination of water pollution is

15. In 1989, the Exxon Valdez oil tanker went off course, hit rocks, and released millions of gallons of oil into the waters off of

16. The most challenging type of water pollution to address is

17. One way of minimizing water pollution from agriculture is with

18. In rural areas, most homes dispose of sewage with the use of a

19. In wastewater treatment plants, solid objects are removed or allowed to settle during

20. One alternative to traditional septic systems where a soil-like humus suitable for fertilizer is produced is the