Earth Day Crossword Puzzle

Advanced Earth Day-themed Crossword Puzzle

1. Third planet from the sun
2. A place with a lot of trees and plants
3. The invisible substance that fills the atmosphere
4. A mixture of decaying organic material used to improve soil quality
4. The average weather of a region over a period of time
5. Found in oceans, rivers, and lakes
6. A resource that can be replaced
7. The environment and its features
8. To use something again after it has been used up
9. Air in motion
10. A building block of organic molecules
11. Derived from living sources
12. The spread of hazardous materials
13. A molecule that is toxic to many organisms
14. A building designed to protect plants from cold temperatures and to create an ideal environment for them to grow
15. At risk of extinction
16. The air around the Earth which contains oxygen and other gases
17. A color often used to represent jealousy
18. The physical and biological factors that influence the life of an organism
19. Reducing waste and pollution
20. Energy from the sun
21. A material that is often used for packaging
22. A plant with a trunk and branches that grows from a seed
23. A specific geographical area where a species is normally found