Planet Earth Crossword Puzzle

Advanced Earth Day-themed Crossword Puzzle

1. Able to be used again and again
2. Earth's main source of energy
3. The average weather in a certain area over a long period of time
4. The place where a living organism dwells
5. A building with walls and a roof made of transparent material, used to grow plants year round
6. A molecule that is toxic to many organisms
7. A mixture of decaying organic material used to improve soil quality
8. Third planet from the sun
9. A component of organic molecules
10. Found in oceans, rivers, and lakes
11. A gas mixture composed of nitrogen, oxygen, and other gases
12. The physical world and all living things
13. In danger of becoming extinct
14. A layer of gases surrounding the Earth
15. To use something again after it has been used up
16. A tall plant with a woody stem and branches
17. The physical and biological factors that influence the life of an organism
18. A place with a lot of trees and plants
19. Reducing waste and pollution
20. The spread of hazardous materials
21. Air in motion
22. A hue found in nature that is often associated with life, growth, and renewal
23. Derived from living sources
24. A material that is often used for packaging