Advanced Earth Day-themed Crossword Puzzle
Listed Items
- 1.  Air in motion
 
- 1.  Found in oceans, rivers, and lakes
 
- 2.  A molecule that is toxic to many organisms
 
- 3.  The average weather of a region over a period of time
 
- 3.  A building block of organic molecules
 
- 4.  Derived from living sources
 
- 5.  To use something again after it has been used up
 
- 6.  The medium that carries sound waves
 
- 7.  The natural home of an animal or plant
 
- 8.  A gaseous composition that surrounds a planet
 
- 9.  A resource that can be used over and over
 
- 10. A mix of decaying organic material used to fertilize soil
 
- 11. A material that is often used for packaging
 
- 12. A type of renewable energy
 
- 13. The environment and its features
 
- 14. The physical and biological factors that influence the life of an organism
 
- 15. A sphere made of land and water
 
- 16. A large perennial plant with a trunk and branches