Across
- 3. Variety of life
- 4. Sustainable energy source
- 6. Plant energy process
- 7. Atmospheric gas
- 10. Resource protection
- 11. Forest removal
- 15. Heat-trapping gases
- 16. Sun-powered energy
- 17. Environmental contamination
- 19. Living environment
- 20. Reuse waste materials
- 21. Weather patterns
- 24. Greenhouse gas element
- 25. Interacting organisms
Down
- 1. Air movement energy
- 2. Land turning desert
- 5. Soil wear
- 8. Polluted precipitation
- 9. Organic material energy
- 12. Long-term balance
- 13. Organic waste decay
- 14. Earth's heat energy
- 18. Water-generated energy
- 22. Potent greenhouse gas
- 23. Atmosphere layer