Across
- 1. Liquid vital for life
- 3. Layer of earth where plants grow
- 6. Flat, green structure on a branch
- 8. Movement on foot
- 11. Power source for electricity
- 13. Short form for ecological
- 14. Remove dirt or impurities
- 15. Energy harnessed from the sun
- 16. Action to decrease in size or amount
- 18. Vital for photosynthesis
- 20. Discarded items
- 23. Color associated with sustainability
- 24. Vast body of saltwater
- 27. Use again for a different purpose
Down
- 2. Environmentally safe or beneficial
- 4. Convert waste into reusable material
- 5. Two-wheeled vehicle powered by pedals
- 7. Free from pollutants or impurities
- 8. Movement of air
- 9. Contamination of the environment by harmful substances
- 10. Small body of still water
- 12. Unwanted or unusable material
- 13. Home to billions of organisms
- 17. Gas that contributes to global warming
- 19. Tall plant with branches and leaves
- 21. Preserve from harm
- 22. Natural source of renewable energy
- 24. Essential gas for life
- 25. Structure for growing plants
- 26. Opposite of contaminated