Across
- 2. classification
- 4. life
- 5. home
- 7. stable
- 9. one
- 10. species
- 11. more
- 14. small
- 15. hibernate
- 17. bird
- 18. zone middle
- 19. anatomy body
- 20. living
Down
- 1. chemical
- 2. environment
- 3. energy
- 6. respiration ATP
- 8. together
- 12. light
- 13. crops
- 16. dark