Across
- 3. Place where garbage is buried
- 5. Gases that trap heat in the atmosphere
- 9. A material that takes a long time to break down
- 10. Energy from the sun
- 11. Using resources without running out
- 14. Turning waste into something new
- 17. Cutting down trees in forests
- 18. Layer that protects Earth from UV rays
- 20. Dirtying the air, water, or land
Down
- 1. Home for plants and animals
- 2. Protecting nature and resources
- 4. Gases released from cars and factories
- 6. A resource that can be replaced naturally
- 7. Taking too many fish from the ocean
- 8. Animals living in nature
- 12. Wearing away of land by water or wind
- 13. Variety of life in an ecosystem
- 15. A gas from burning fossil fuels
- 16. Long-term weather patterns
- 19. Rotting food and plants to make soil