Across
- 3. that extend conception to death.
- 4. constructed concept.
- 5. development best it left as free.
- 8. reproductive maturity.
- 11. slowly
- 12. to 2 weeks of life.
- 14. of slow and uniform growth.
Down
- 1. of several years 12 to 14 years old.
- 2. through interactions.
- 5. is gradual.
- 6. of environment.
- 7. foundation age
- 9. born baby.
- 10. from fertilization to birth.
- 13. of biological maturation.