Biology

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Across
  1. 3. nearest to the back of the body
  2. 6. The front of any structure
  3. 8. the process of deteriorating
  4. 9. nerve cord nervous tissue
  5. 10. focusing on a specific skill
  6. 11. The 3 mail germ layers
  7. 14. evolution of the nervous tissue
  8. 17. fertilized egg cell
  9. 18. super small
  10. 19. a ne’er or back on a animal to help them move
  11. 20. pouch a sack in between the pharynx and esophagus
  12. 21. more than 2 equal halves
Down
  1. 1. animals state of development
  2. 2. the nearest to the head
  3. 4. a animal without a back bone
  4. 5. food passing through and braking down
  5. 7. a living moving thing
  6. 12. both sides of a animal or object are the same
  7. 13. a animal with a back bone and skeleton
  8. 15. higher vertebrate that supports the axis of the body
  9. 16. 2 equal halves