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