Across
- 5. long term shifts in weather
- 6. gases surrounding the earth
- 10. the action of reducing seriousnes
- 13. radiation emmited by the sun
- 14. community of interacting organisms
- 15. a natural fuel
Down
- 1. the state of the atmoshere
- 2. gas produced by burning carbon
- 3. increase temperature on earth
- 4. weather conditions over a long period
- 7. the production and discharge of something gas
- 8. the process of adapting
- 9. the fact or process of a species becoming extinct
- 11. gases in the atmosphere that trap heat
- 12. gases that trap heat