Crosswords

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Across
  1. 2. write
  2. 4. chair
  3. 6. period
  4. 8. light
  5. 12. symbiosis
  6. 13. canvas
  7. 15. biology
  8. 16. school
  9. 17. equation
  10. 18. poetry
Down
  1. 1. algebra
  2. 2. water
  3. 3. bread
  4. 5. hypothesis
  5. 7. history
  6. 9. metaphor
  7. 10. fossil
  8. 11. democracy
  9. 13. clock
  10. 14. study