The puzzle of the Integrated Science

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Across
  1. 2. Word of chapter 22
  2. 7. Word of chapter 17
  3. 8. Word of chapter 32
  4. 9. Word of chapter 25
  5. 10. Word of chapter 21
  6. 12. Word of chapter 15
  7. 18. Word of chapter 9
  8. 22. Word of chapter 10
  9. 24. Word of chapter 7
  10. 25. Word of chapter 1
  11. 27. Word of chapter 5
  12. 28. Word of chapter 24
  13. 29. Word of chapter 26
  14. 30. Word of chapter 19
  15. 32. Word of chapter 2
Down
  1. 1. Word of chapter 11
  2. 3. Word of chapter 30
  3. 4. Word of chapter 6
  4. 5. Word of chapter 3
  5. 6. Word of chapter 14
  6. 11. Word of chapter 23
  7. 13. Word of chapter 28
  8. 14. Word of chapter 12
  9. 15. Word of chapter 31
  10. 16. Word of chapter 8
  11. 17. Word of chapter 4
  12. 19. Word of chapter 13
  13. 20. Word of chapter 29
  14. 21. Word of chapter 16
  15. 23. Word of chapter 20
  16. 26. Word of chapter 27
  17. 31. Word of chapter 18