Advanced Earth Day-themed Crossword Puzzle
Listed Items
- 1. A component of coal and diamonds
- 2. To use something again after it has been used up
- 3. A molecule that is toxic to many organisms
- 3. Derived from living sources
- 4. Earth's main source of energy
- 5. In danger of becoming extinct
- 6. The invisible substance that fills the atmosphere
- 7. Reducing waste and pollution
- 8. Decayed plant and animal material used to improve soil
- 9. The introduction of contaminants into the air, water, or soil
- 10. The physical and biological factors that affect the life of an organism
- 11. A current of air blowing from a particular direction
- 12. A tall, woody plant with a trunk, branches and leaves
- 13. The environment and its features
- 14. A structure that provides warm temperatures and humidity for plants to grow
- 15. The average weather of a region over a period of time
- 16. A resource that can be reused
- 17. Covers 70% of Earth's surface
- 18. A sphere made of land and water
- 19. A color between blue and yellow