PREFIX

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Across
  1. 3. person thinks is always sick
  2. 7. 3 Dimensional image
  3. 9. device to get water on the street
  4. 10. all the water on earth
  5. 11. the study myths
  6. 12. under the skin
  7. 14. the study of earth's structure
  8. 15. secret code
Down
  1. 1. device for looking underwater
  2. 2. the study of fossils
  3. 4. a person doesn't critic themselves
  4. 5. cold temperature
  5. 6. organizational structure on paper
  6. 8. study of the weather
  7. 10. a boat that rises on water
  8. 13. two or more letter combined