Advanced Earth Day-themed Crossword Puzzle
Listed Items
- 1. A hue that can be seen in many plants
- 2. Air in motion
- 2. Clear, colorless substance that covers over 70% of Earth's surface
- 3. A substance found in coal, diamonds, and graphite
- 4. Organic matter that has been broken down into a soil-like substance
- 5. Reducing waste and pollution
- 6. The complex of physical, chemical, and biotic factors that act upon an organism or an ecological community
- 7. At risk of extinction
- 8. A structure that traps heat from the sun and is used to grow plants
- 9. A type of renewable energy
- 10. Derived from living sources
- 11. A place with a lot of trees and plants
- 12. A tall plant with a woody stem and branches
- 13. A layer of air that surrounds a planet
- 14. The atmosphere of a particular region
- 15. Able to be used again and again
- 16. The spread of hazardous materials
- 17. The environment and its features
- 18. The geographical area where a particular species is located