Across
- 4. Variety of life in an ecosystem
- 6. Amount of CO2 released by activities
- 10. Gases released by vehicles or factories
- 11. Catching too many fish, harming ecosystems
- 15. A community of living organisms
- 18. Turning organic waste into fertilizer
- 19. Ocean levels increasing due to ice melting
- 20. Planting trees where none existed before
- 23. Energy sources that can be replenished
- 26. Turning old materials into better products
- 27. Power from the sun
- 28. Annual event promoting environmental care
- 29. Using materials again instead of discarding
- 30. Power generated by wind
Down
- 1. Turning waste into reusable materials
- 2. Water covering land due to heavy rain
- 3. Ground shaking due to underground activity
- 5. Non-renewable energy sources like oil
- 7. Planting trees to restore forests
- 8. Large ocean wave caused by earthquakes
- 9. Protecting natural resources
- 12. Vehicle using both fuel and electricity
- 13. Cutting down trees
- 14. Glaciers disappearing due to heat
- 16. Prolonged period of excessive heat
- 17. Loss of color in coral due to heat
- 21. A vehicle powered by electricity
- 22. Gases trapping heat in the atmosphere
- 24. Long-term shifts in global temperatures
- 25. Contamination of air, water, or soil