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Unformatted text preview: 11. Dikes and levees are meant to control floods. 12. In water treatment, about 60% of suspended solids are removed in secondary treatment, through use of settling tanks or clarifiers. 13. MPAs stands for “Marine protected areas” 14. Upwelling is the flow of cold, deep water toward the surface. Answers 1. Water with few dissolved salts. 2. Areas that are periodically flooded by a river. 3. Systems that combine elements of freshwater and dry land; may include marshes, swamps, and bogs. 4. The boundary between the zone of saturation and zone of aeration for an aquifer. 5. Littoral zone 6. Benthic zone 7. Limnetic zone 8. Profundal zone 9. False 10. True 11. True 12. False 13. True 14. True...
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- Spring '07
- non-point source pollution, Littoral Zone