Across
- 2. transition from child to adulthood
- 4. the stage of old age
- 5. development period before birth
- 7. eggs are produced here
- 8. sperm cells are produced here
- 10. physically mature
- 12. having to do with people
- 13. period between birth and puberty
- 15. part of a cell that carries our heredity
Down
- 1. male hormone
- 3. female hormone
- 6. union of sperm and ovum
- 9. the teen years
- 11. to do things for yourself
- 14. cause physical changes in teens