Across
- 3. Coal or gas formed from ancient organic remains.
- 6. To change behavior or ideas to fit a new situation.
- 7. Exposed to the possibility of being harmed.
- 10. Requiring immediate action or attention.
- 11. A geographic area where organisms and weather work together.
- 12. Worrying or disturbing; causing anxiety.
- 14. To reduce something to the smallest possible amount.
- 16. To protect an environmentally important place from harm.
- 17. Avoiding depletion of resources to maintain balance.
- 19. To keep something as it is to prevent decay.
- 22. The natural home or environment of an organism.
- 23. Easily broken; delicate (like many ecosystems).
Down
- 1. Highly destructive or causing severe shock.
- 2. The total greenhouse gases generated by our actions.
- 4. The variety of all distinct types of life on Earth.
- 5. To introduce new methods, ideas, or products.
- 8. The layer of gases surrounding the planet.
- 9. Living peacefully and in agreement with nature.
- 11. The discharge of gas or radiation, often from factories.
- 13. Energy from a source that is not depleted when used.
- 15. An event causing great and sudden damage.
- 18. To publicly recommend or support a cause.
- 20. To bring back to a former, better condition.
- 21. Feeling or inspiring optimism about the future.