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Water Resources. Saving Water. Water Pollutants. Water Testing. Miscellaneous. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500. 500. 500.

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  1. Water Resources Saving Water Water Pollutants Water Testing Miscellaneous 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

  2. The largest aquifer in the world that is being significantly depleted due to overuse

  3. What is the Ogallala Aquifer?

  4. This is a reason to settle on a floodplain

  5. What is transportation, flat land, or soil fertility?

  6. This is caused when too much groundwater is removed and ocean water is pumped into an aquifer.

  7. What is salt water intrusion?

  8. Water travels over this area of land to the ocean.

  9. What is a watershed?

  10. This is happens upstream when a dam is built.

  11. Flooding increases and a reservoir is created.

  12. This is water that has been used for other purposes and is now being used for irrigation of landscaping.

  13. What is gray water?

  14. This is a method to reduce water use by planting native plants or desert-type plants.

  15. What is xeriscaping?

  16. This “law” prevents people living upstream on a river from blocking all of the water from going downstream.

  17. What are riparian rights?

  18. This is the most efficient method of irrigating crops.

  19. What is drip irrigation?

  20. This law sets limits on the amounts of contaminants that can be found in water used for consumption.

  21. What is the Safe Drinking Water Act?

  22. Organic matter is classified as this type of pollutant.

  23. What is an oxygen demanding waste?

  24. This dip will occur in a river or stream when organic matter is added.

  25. What is an oxygen sag curve?

  26. This is the main cause of increased sediment pollution in water.

  27. What is erosion?

  28. This term is used to describe a lack of or low quantity of oxygen in the water like in the Gulf of Mexico at the mouth of the Mississippi.

  29. What is anoxia or hypoxia?

  30. This is the most direct problem associated with an increase in temperature in a body of water. It is responsible for the other problems.

  31. What is a decrease in dissolved oxygen (D.O.) levels?

  32. This is a measure of the amount of oxygen needed by bacteria to break down organic waste in the water. It increases as D.O. decreases.

  33. What is B.O.D. (biological oxygen demand)?

  34. An increase in this means that the water is becoming more basic.

  35. What is pH?

  36. This test measures the clarity of water?

  37. What is turbidity?

  38. If the presence of these are high, then either fertilizer or animal waste has likely entered the water.

  39. What are nitrates and phosphates?

  40. This test will verify that human or animal waste is present in a body of water.

  41. What is fecal coliform?

  42. This nutrient has the greatest impact on eutrophication?

  43. What is phosphorus?

  44. This happens to the nutrients in a river downstream from a dam.

  45. What is decrease?

  46. This is the site of a disasterous water transfer .

  47. What is the Aral Sea?

  48. This would cause a decrease in the amount of photosynthesis in a body of water.

  49. What is eutrophication, increased turbidity?

  50. This is added to water at the end of the water treatment process to kill bacteria?

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