Across
- 5. a gas that is expelled from the body by the respiratory system (CO2)
- 6. anything that can be used to produce something else
- 7. at risk of extinction
- 10. the state of being extremely poor
- 12. the people in society
- 15. a guardian or trustee of an environmental area or resource
- 17. something that cannot be reused or replaced easily
- 19. able to be maintained
- 21. a species that no longer exists
- 22. a long term change in the earth's climate
Down
- 1. other things available as another possibility or choice
- 2. harmful or poisonous substances that affect the environment
- 3. capable of being decomposed
- 4. the trapping of the sun's warmth in the earth's atmosphere
- 8. a gradual increase in average global temperature
- 9. weather conditions
- 11. the surroundings in which a person, animal or plant lives
- 13. something that can be used again and again
- 14. the preservation and protection of something
- 16. a group of people that lead a country
- 18. the act of using up a resource
- 20. acting rightly or wrongly