Earth Crossword Puzzle

Advanced Earth Day-themed Crossword Puzzle

1. A gas which absorbs harmful UV radiation
2. Often used in place of glass, metal, and wood
3. Produced by a living organism
4. Found in all living organisms
5. A large area of land where trees are the dominant vegetation
6. The clearing of trees to make room for other land uses
7. A mixture of gases that make up the Earth's atmosphere
8. A liquid that covers 70% of the Earth's surface
9. Fith largest planet in the solar system
10. The air or gas surrounding the Earth or any other planet
11. On the brink of extinction
12. Decomposing organic material used to fertilize plants and improve soil structure
13. Adverse alteration of the physical, chemical, or biological properties of air, water, or soil
14. The elements of the world, especially plants, animals, and landscapes
15. Place where a species can exist
16. A light, gentle flow of air
17. A building made of glass or plastic to trap heat from the sun and create a warm environment
18. Reduce, reuse, and repurpose
19. A structure of interconnected branches, twigs, and leaves that provide a habitat for many species of animals and plants
20. The prevailing weather conditions of a region