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Science

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Across
  1. 2. A molecule that has electrically charged areas
  2. 3. A mixture that forms when one substance dissolves another
  3. 4. The substances that cause many types of pollution that can also include water pollution
  4. 6. The land area that supplies water to a river system
  5. 7. Practice of using less of a resource so that it will not be used up
  6. 9. The waste water and the different kinds of wastes in it
  7. 11. The process by which a gas changes to a liquid
  8. 12. The process of which nutrients builds up in the lake
  9. 13. Form of energy that an object has when it is moving
  10. 14. Continuous process by which water moves from earth's surface to the atmosphere and back
  11. 16. A ridge of land that separates watersheds
  12. 17. Process of passing water through a series of screens that allows water through but not larger solid particles
  13. 21. A form of precipitation that is more acidic than normal
  14. 23. A lake that stores water for human use
  15. 24. Material that prevents water from passing through
  16. 26. One possible method of obtaining fresh water from salt water
  17. 32. A substance that does the solute dissolves into
  18. 33. Energy that is stored and waiting to be used.
  19. 35. Place where an organism lives and obtains all things it needs to survive
Down
  1. 1. Streams and smaller rivers that feed into a main river
  2. 2. A measurement of how acidic or basic water is
  3. 5. The process of which water is given off through the leaves as water vapor
  4. 8. Substances such as nitrogen and phosphorus that enable plants and algae to grow
  5. 10. Water that fills the cracks and spaces in underground soil and rock layers
  6. 11. Amount of one substance in a certain volume of another substance
  7. 12. Process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state
  8. 15. The combined level of Calcium and Magnesium in a sample of water
  9. 18. Materials that have large and connected pores
  10. 19. The process of which particles stick some sticky globs and sinks into the settling basins
  11. 20. Process of supplying water to areas of land to make them suitable for growing crops
  12. 22. Land area that is covered by shallow layer of water during some or all of the year
  13. 25. Chemicals intended to kill insects and other organisms that damage crops
  14. 27. The area of permeable rock or soil that is totally filled with water
  15. 28. A condition where an area experiences a long period of scarce rainfall
  16. 29. Heavier sediments that build up into long ridges
  17. 30. The combined force of attraction among water molecules and the molecules of surrounding materials
  18. 31. A widely spread source of pollution that cant be tied to a specific point of origin
  19. 34. Specific source of pollution that can be identified