Sustainable Agriculture

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Across
  1. 7. An underground store of water
  2. 8. A phase change from solid to gas
  3. 9. A resource that is used faster than it is regenerated
  4. 12. Rain, snow, sleet, etc
  5. 13. The watershed Westbrook is in
  6. 14. Water soaking into the ground
  7. 15. The process of wearing away of the top layer of soil
  8. 17. Water flowing downhill, from gravity
  9. 18. The land area that drains into a particular body of water
Down
  1. 1. A phase change from gas to liquid
  2. 2. How many years of healthy, farmable topsoil we have left
  3. 3. physical, chemical and biological decline in quality
  4. 4. Pollution resulting from numerous sources
  5. 5. Meeting needs of the present without compromising the ability of future generations to meet their needs
  6. 6. A phase change from liquid to gas
  7. 10. Materials or substances that occur in nature and can be used by humans
  8. 11. Pollution from a single, identifiable source
  9. 16. A resource that is regenerated by the Earth faster than we use it