Chapter 3 and 4

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Across
  1. 5. evolving key vertebrates innovation
  2. 7. Series of seperate bones
  3. 10. Force divided
  4. 12. Convention
  5. 14. Flow of events
  6. 18. Tinyscales and forkshaped tail
  7. 21. Splinters of primitive bone
  8. 22. Growth
  9. 23. Four fotted ancestors
  10. 25. Effect on body
  11. 26. Force applied to objects
  12. 28. engineer term for torque
  13. 33. Anterior clustering of specialized sensory organs
  14. 34. Study of size and its consequences
  15. 35. Mud burrowing
  16. 36. Measurements
  17. 37. Mass divided by volume
  18. 38. Laid down in odontoblasts
  19. 39. Solid cylindrical body
Down
  1. 1. Acting in distance
  2. 2. Concepts of inertia
  3. 3. All forces balance
  4. 4. Change in shape
  5. 6. Arose within the protochordates
  6. 8. Both organs
  7. 9. those without an amnion
  8. 11. Different shapes and ages
  9. 13. Muscular pharyngeal pump
  10. 15. Spindle shape
  11. 16. Vertebrates producing embryos
  12. 17. Fossil agnathans
  13. 19. Earliest vertebrates
  14. 20. Transitional species
  15. 21. Lampreys
  16. 24. Rate
  17. 27. Physical forces
  18. 29. Opposing weight
  19. 30. Acting force
  20. 31. Concept of distance
  21. 32. Toothlike microfossils