Across
- 2. extinct
- 5. fuel such as coal or gas
- 6. gases in the earth's atmosphere that trap heat
- 8. colorless odorless gas produced by burning carbon
- 9. production and discharge of something
- 11. warming,the long-term warming of the planet's overall temperature
- 13. change or the process of change by which an organism
- 14. dryness, sunshine, wind, rain, etc.
Down
- 1. gases surrounding the earth or another planet.
- 3. biological community of interacting organisms
- 4. trapping of the sun's warmth in a planet's lower atmosphere
- 7. action of reducing the severity
- 8. change,long-term shifts in temperatures and weather patterns.
- 10. weather conditions
- 12. radiation,general term for the electromagnetic radiation emitted by the sun