Across
- 6. renewable resources
- 9. coal
- 10. resources
- 12. earth
- 13. smog
- 15. non-renewable resources
- 16. endangered species
- 17. oil
- 18. atmosphere
- 20. trees
- 24. pollution
- 25. clean air
- 26. climate
- 27. jungle
Down
- 1. natural resources
- 2. ozone layer
- 3. climate change
- 4. deforestation
- 5. global warming
- 7. greenhouse effect
- 8. dump
- 11. planet
- 14. forest
- 19. environment
- 21. biodiversity
- 22. nature
- 23. clouds