Water Availability

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Across
  1. 3. the second water need
  2. 4. 3% of earth's water is...
  3. 5. economic: demand up + supply low = ____ value
  4. 7. ____ = not much water
  5. 9. is one of the water needs
Down
  1. 1. no _____ = no water
  2. 2. cover 70% of the earth's surface
  3. 6. the third water need/hydration
  4. 8. water ____ = they are salty