Water Pollution Ch11 Sec2

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Across
  1. 1. the disastrous 2010 __ __ oil spill in the Gulf of Mexico made front-page news all around the world.
  2. 3. oil and gasoline from personal __ is a form of nonpoint source pollution
  3. 6. sensitive coastal ecosystems, such as __ __, estuaries, and coastal marshes, are the MOST AFFECTED by pollution.
  4. 8. as underground storage tanks age, they may develop leaks that allow pollutants to seep into the __ and groundwater.
  5. 14. the process where nutrients flow downstream or settle to the bottom.
  6. 17. agriculture, forestry, septic systems, boating, industry, urban runoff, construction, habitat degradation, etc. can all be sources of __.
  7. 18. there are many different kinds of water pollutants, both natural and __-__.
  8. 20. a nutrient that can cause excessive growth of algae.
  9. 22. nonpoint source pollution, aka __ __, comes from many different sources that are often difficult to identify.
  10. 24. the accumulation of pollutants at successive levels of the food chain. (pg R74)
  11. 25. the solid material that remains after wastewater treatment.
  12. 26. when lakes and slow-moving streams contain an abundance of nutrients they are __.
  13. 27. as oxygen levels drop in bodies of water, __ organisms may suffocate and die.
  14. 28. the fish in figure 3.7 did not die because of a __ __, they died because of thermal pollution.
  15. 29. in many coastal areas, dead zones exist, where excess nutrients from runoff have caused __ __ levels.
Down
  1. 2. most natural nutrients in water come from __ matter, such as leaves and animals.
  2. 4. according to figure 3.9, Bay of __ had the 8th major oil spill in 1979.
  3. 5. pollutants usually enter groundwater when polluted surface water __ from the Earth's surface.
  4. 7. large floating mats of algae in polluted bodies of water.
  5. 9. __ eutrophication is when inorganic plant nutrients enter the water sewage and fertilizer runoff.
  6. 10. water that contains waste from homes or industry.
  7. 11. pollution discharged from a single source.
  8. 12. if the flow of warm water into a lake/stream is constant, it may cause the total __ of an aquatic ecosystem.
  9. 13. most storage tanks in the US hold __ products, such as gasoline and heating fuel.
  10. 15. __ pollution can occur when power plants and other industries use water in their cooling systems then discharge the warm water into a lake or river.
  11. 16. according to the EPA, __ __ remain the largest source of water quality problems in the US.
  12. 19. pesticides, herbicides, chemical fertilizers, and petroleum products are common __ pollutants.
  13. 20. __ in some laundry/dishwashing detergents are another major cause of eutrophication.
  14. 21. the introduction of chemical, physical or biological agents into water that degrade water quality and harm the organisms.
  15. 23. water is __ and treated to make the water clean enough to return to a river, lake, or the oceans.