Earth Crossword Puzzle

Advanced Earth Day-themed Crossword Puzzle

1. The envelope of gases that surrounds the Earth
2. A nutrient-rich mixture of decaying organic matter
3. In danger of vanishing
4. A tall plant with a single stem and many branches
5. An area built with glass or plastic walls and roof to absorb and retain heat from the sun
6. The process of making land, water, air, or other parts of the environment dirty and not safe or suitable to use
7. A mixture of gases that forms the Earth's atmosphere and is necessary for the respiration of living organisms
8. Fith largest planet in the solar system
9. The basis of all organic molecules
10. A gas which absorbs harmful UV radiation
11. Liquid form of H2O
12. Transforming waste into new items
13. A natural movement of air in the atmosphere
14. Area that offers necessary resources
15. The typical weather patterns of a region
16. Often used in place of glass, metal, and wood
17. Made from living or once-living organisms
18. The physical universe, including plants, animals, and landscapes
19. A thick grouping of trees, shrubs, and other plants
20. The removal of vegetation from an area of land