Earth Day Crossword

Advanced Earth Day-themed Crossword Puzzle

1. To use something again after it has been used up
2. Clear, colorless substance that covers over 70% of Earth's surface
3. Air in motion
4. A material that is used to make toys and containers
5. A place where a living organism lives and grows
6. A resource that can be replaced
7. The invisible substance that fills the atmosphere
8. The natural world and its surroundings
9. A wooded area, usually with a lot of trees and plants
10. A layer of gases surrounding the Earth
11. A mix of decaying organic material used to fertilize soil
11. The state of the atmosphere in a given region
12. A gas that absorbs ultraviolet radiation
12. Derived from living sources
13. Reducing waste and pollution
14. A component of coal and diamonds
15. Third planet from the sun
16. The physical world and all living things
17. A hue found in nature that is often associated with life, growth, and renewal
18. The introduction of contaminants into the air, water, or soil
19. At risk of extinction
20. A plant with a trunk and branches that grows from a seed
21. A type of renewable energy
22. A structure that traps heat and light from the sun to grow plants in a controlled environment