Chapter 9 Crossword

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Across
  1. 4. Filter for nutrients and toxins
  2. 8. psychology How things change over time
  3. 10. Genetics manifest over time
  4. 11. 18 months to two
  5. 12. view Development gradual
  6. 13. stages Life periods by significant transitions
  7. 14. twins Single egg splits into two
  8. 17. Working together
  9. 18. After 8 weeks
  10. 19. First 8 weeks of pregnancy
Down
  1. 1. nurture issue Which is greater?
  2. 2. period First month after birth
  3. 3. Toxins
  4. 5. period Before birth
  5. 6. Attached to first thing they see
  6. 7. Fertilized egg
  7. 8. view Uneven development
  8. 9. Relationship between parent and child
  9. 15. comfort Reassured by touch
  10. 16. twins Two eggs same womb