SUB & SUPER ROOT WORD CROSSWORD

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Across
  1. 3. To give in to a superior force
  2. 6. Forces beyond scientific understanding
  3. 8. replacement for a person or thing
  4. 12. Excellent, outstanding
  5. 13. Belief in something beyond scientific knowledge
  6. 17. very large dinosaur
  7. 19. Located underground
  8. 20. Sign up to a publication or belief
  9. 22. Travelling above the speed of sound
  10. 23. To place underwater
  11. 24. Following afterward
Down
  1. 1. At surface level or at first appearance
  2. 2. Understated, not highly noticeable
  3. 4. fictional character with powers beyond humans
  4. 5. Part of the mind of which one is not aware
  5. 7. A very big shop selling a wide range of items
  6. 8. tunnel or passage under a road
  7. 9. Higher in quality, status, or rank
  8. 10. Impossible to overcome
  9. 11. Unnecessary because there is already enough
  10. 13. Taking away from a bigger number
  11. 14. smaller division within a set
  12. 15. ship that goes under the sea
  13. 16. To watch over
  14. 18. Sad or low in mood
  15. 21. built-up area around a town or city