Estados Unidos inventa gusano guerrero

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Across
  1. 4. Soft (6)
  2. 6. Strong, resistant (10)
  3. 9. Unit (6)
  4. 10. To recover (9)
  5. 12. Polymer (8)
  6. 13. To survive (10)
  7. 15. Essentially (13)
  8. 18. Suitable, fit (6)
  9. 20. Real world (5, 4)
  10. 21. Worm (7)
  11. 22. Contracting (11)
  12. 23. Equipment, device (11)
  13. 27. To place (7)
  14. 29. Malleable (8)
  15. 30. Equipped (8)
  16. 31. Narrow (8)
  17. 34. Worm (6)
  18. 35. Damage (4)
Down
  1. 1. On the other hand (3, 4, 5)
  2. 2. To throw it (7)
  3. 3. To imitate (6)
  4. 5. To traverse (10)
  5. 7. To add (6)
  6. 8. In the sides (2, 3, 5)
  7. 11. To contract (8)
  8. 14. In the same way that (3, 5, 4, 3)
  9. 16. Hammer (8)
  10. 17. Wrapped (8)
  11. 19. Terrain (7)
  12. 24. Engineer (9)
  13. 25. To support, put up with (8)
  14. 26. Hits, knocks (6)
  15. 28. Hummingbird (7)
  16. 32. Segment (8)
  17. 33. Creature (8)