Across
- 4. drought
- 6. invention
- 7. deforestation
- 10. to reuse
- 11. pollution, contamination
- 12. air polution
- 14. to threaten
- 15. to destroy
- 16. risk
- 18. to value
- 19. to become extinct
- 21. ozone layer
- 24. research
- 26. to keep informed
- 27. to develop
- 31. responsible
- 32. garbage container
- 33. to breathe
- 34. biodiversity
- 35. oil
- 36. to fly
Down
- 1. extinction
- 2. transformation
- 3. planet
- 5. natural resource
- 8. landslide
- 9. innovation
- 13. environment
- 17. flood
- 18. to vote
- 19. greenhouse effect
- 20. erosion
- 22. climate
- 23. responsibility
- 25. to protect
- 28. to value
- 29. renewable
- 30. earthquake