Across
- 2. Long-term weather pattern.
- 4. Renewable energy generated by turbines.
- 9. Interconnected system of life and environment.
- 11. Large-scale removal of forests.
- 13. Grown without synthetic chemicals.
- 14. Unwanted or unusable materials.
- 15. Element linked to emissions.
- 17. Organic waste turned into fertilizer.
- 19. Clean energy from the sun.
- 20. To keep something going without harming it.
Down
- 1. Variety of life on Earth.
- 3. Gases released into the atmosphere.
- 5. Type of gas causing warming.
- 6. Reusing materials to reduce waste.
- 7. Rapid growth of algae that harms water quality.
- 8. Synthetic material harming oceans.
- 10. Contamination of air, water, or soil.
- 12. Layer protecting Earth from UV rays.
- 16. Polluted precipitation harming ecosystems.
- 18. Fuel Nonrenewable energy source like coal or oil.