Blue Marble Crossword

Advanced Earth Day-themed Crossword Puzzle

1. The average weather in a certain area over a long period of time
2. A blend of decaying plant material that helps to enrich the soil
3. A special place where plants and flowers are grown and protected from cold weather
4. A material that is used to make toys and containers
4. The introduction of contaminants into the air, water, or soil
5. A mixture of gases that surrounds the Earth
6. A building block of organic molecules
6. Reducing waste and pollution
7. The natural home of an animal or plant
8. A place with a lot of trees and plants
9. A sphere made of land and water
10. Found in oceans, rivers, and lakes
11. A resource that can be replaced
12. The environment and its features
13. To use something again after it has been used up
14. Earth's main source of energy
15. Air in motion
16. Derived from living sources
17. At risk of extinction
18. A molecule that is toxic to many organisms
19. The physical and biological factors that influence the life of an organism
20. A layer of air that surrounds a planet