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Across
  1. 6. an account of a person's life written by that person
  2. 8. instrument for measuring temperature
  3. 11. an optical instrument designed to make distant objects appear nearer
  4. 14. study of living organisms
  5. 15. study of animals
  6. 17. container that keeps liquids hot
  7. 18. garment that keeps you warm
  8. 19. study of the earth's physical structure and substance
  9. 20. an account of someone's life written by someone else
  10. 21. a metric unit of measurement equal to 1,000 meters
  11. 22. study of the origin of words
  12. 23. internal heat of the earth
Down
  1. 1. a device that regulates temperature
  2. 2. the continuous line forming the boundary of a closed geometric figure
  3. 3. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere
  4. 4. oldest branches of mathematics
  5. 5. an instrument measuring atmospheric pressure
  6. 7. one thousandth of a meter
  7. 9. the study of myths
  8. 10. laboratory instrument used to examine objects that are too small to be seen by the naked eye
  9. 12. the study of the physical features of the earth and its atmosphere
  10. 13. an apparatus consisting of a tube attached to a set of mirrors or prisms
  11. 16. an instrument on a vehicle's dashboard indicating its speed