Across
- 3. - Reuse in such a way as to create a product of higher quality or value than the original!
- 5. - A layer in the earth’s stratosphere that absorbs most of the sun's harmful ultraviolet radiation!
- 8. - A place where waste is buried under layers of earth!
- 9. - Energy derived from the sun's rays!
- 10. - Gases released into the air, often from vehicles or factories!
- 15. - Related to or derived from living matter!
- 16. - The natural world, including the air, water, and land in which we live!
- 17. - When a species has no living members left!
- 18. - To maintain something in its original or existing state!
- 19. - Don't drop this on the ground; dispose of it properly!
Down
- 1. - To contaminate, especially the natural environment, with harmful substances!
- 2. - The branch of biology that deals with the relations of organisms to one another and to their physical surroundings!
- 4. - Decomposed organic material that enriches the soil!
- 6. - A community of living organisms and their environment working together!
- 7. - To protect from wasteful loss, or use resources wisely!
- 11. - Practices that meet current needs without compromising future generations'!
- 12. - To convert waste into reusable material!
- 13. - The natural home or environment of an animal, plant, or other organism!
- 14. - The layer of gases surrounding our planet!
- 20. - A source of energy that is not depleted when used, like wind or hydro power!