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