Chapter 3&4

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Across
  1. 2. middle layer of the long bone
  2. 3. separated fluid flows in the same direction
  3. 5. fins located posteriorly
  4. 9. SI for mass
  5. 10. slender rod develops from mesoderm
  6. 13. vertebrates with jaws
  7. 14. unit of electrical power
  8. 16. study of light and the way it affect things
  9. 19. speed in one direction
  10. 22. support on which lever moves
  11. 23. anterior clustering of specialized sensory organs
  12. 28. weight of the air in Earth's atmosphere
  13. 29. fluid-filled central canal
  14. 30. encases embryo in a protective water compartment
  15. 31. measurements of variables with a magnitude and direction
  16. 33. organ for obtaining oxygen from water
  17. 35. power to push or pull objects
  18. 36. process of moving
  19. 37. without amnion
  20. 38. measure of mass per unit of volume
  21. 39. animals with spinal column
  22. 41. unit for amount of substance
Down
  1. 1. gel-liked core within each vertebral disk
  2. 4. eel-like scavengers
  3. 6. uniform in motion
  4. 7. fins placed anteriorly
  5. 8. SI for intensity of light
  6. 11. encloses the notochord
  7. 12. unit of work
  8. 15. descendants of four-footed ancestor
  9. 17. fluid flows in opposite direction
  10. 18. jawless fishes
  11. 20. produce embryo wrapped in amnion
  12. 21. broken bone
  13. 24. rate which an object change its velocity
  14. 25. time period were early vertebrae fossil recovered
  15. 26. four-footed
  16. 27. force applied to an object
  17. 32. encases the brain
  18. 34. series of cartilage joined as a backbone
  19. 40. form of an object