Water on Earth

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Across
  1. 2. the largest ocean
  2. 7. makes up 3 percent of the water on Earth
  3. 9. the number of continents on Earth
  4. 10. 97 percent of water is located here
  5. 12. ocean water contains this substance and it makes it unfit to drink
Down
  1. 1. About 2 percent of water on the earth are frozen in ________and ice caps
  2. 3. the second largest ocean
  3. 4. the study of the movement and distribution of water on earth
  4. 5. this is a mnemonic that is used the remember the great lakes
  5. 6. the largest amount of water that is readily available for human use.
  6. 8. the number of oceans on Earth
  7. 11. makes up over 70 percent of the total surface of our planet