Across
- 1. environment
- 2. extinction
- 5. energy
- 6. ecology
- 8. endangered
- 12. species
- 14. windenergy
- 16. environmentalism
- 17. toxicwaste
- 18. flood
Down
- 1. overpopulation
- 3. world
- 4. environmentallyfriendly
- 7. ecological
- 9. globalwarming
- 10. light
- 11. problems
- 12. earth
- 13. organic
- 15. danger