Matter in Ecosystems

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Across
  1. 3. the process of converting nitrates back into nitrogen gas
  2. 7. the most abundant gas in Earth's atmosphere
  3. 8. the process by which liquid water changes into water vapor
  4. 10. evaporation of water vapor from plant leaves
  5. 11. a relationship in which one organism benefits and the other is harmed
  6. 12. a relationship in which one organism benefits and the other is not harmed
Down
  1. 1. the natural process that describes the repeating cycle of nitrogen between soil, plants, animals, bacteria, and the atmosphere
  2. 2. the process by which water vapor changes into liquid water
  3. 4. the process by which plants use sunlight to produce food
  4. 5. water that falls to the ground from the atmosphere
  5. 6. a relationship in which both organisms benefit
  6. 9. the natural process by which water is continually recirculated between the Earth's surface and atmosphere
  7. 12. a gas released by animals during respiration