Water Systems

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Across
  1. 3. area of land where precipitation collects and drains off into a common outlet,
  2. 5. all the waters on the earth's surface
  3. 6. the rigid outer part of the earth
  4. 7. the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land
  5. 9. water held underground
Down
  1. 1. the quality or degree of being saline
  2. 2. the envelope of gasses surrounding the earth
  3. 4. a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect
  4. 8. a slowly moving mass or river of ice