Cycles of Nature

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Across
  1. 1. One of the three carbon sinks.
  2. 4. When snow, rain, sleet, or hail falls.
  3. 8. dioxide Greenhouse gas needed by plants for photosynthesis.
  4. 11. When water is turned from a liquid to a gas.
  5. 12. One of the three carbon sinks.
  6. 13. When water vapor forms clouds.
  7. 14. Fixes Nitrogen to the soil so that it can be absorbed by plant.
Down
  1. 2. Essential element needed that makes up 78% of Earth's atmosphere.
  2. 3. How animals obtain Nitrogen.
  3. 5. One of the three carbon sinks.
  4. 6. Fix Nitrogen to the soil so plants can use it.
  5. 7. When these erupt, Carbon Dioxide is released into the atmosphere.
  6. 9. Gas needed by animals to survive, it is made by plants.
  7. 10. When plants release water.
  8. 13. When large amounts of water pool together.