Across
- 2. Dioxide: a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
- 4. effect: warming when solar radiation is trapped by the atmosphere
- 5. Fuel: energy-producing substance derived from preserved organisms
- 8. watery layer of the earth's surface
- 10. gradual transformation into arid, uninhabitable land
- 12. radiation: radiation from the sun
- 13. the weather in some location averaged over a period of time
- 14. conditions such as temperature and precipitation
- 16. Change:a change in the world's weather patterns over time
Down
- 1. the regions of the Earth where living organisms exist
- 3. substance that is released
- 6. falling to earth of any form of water
- 7. gas: a gas that contributes to the greenhouse effect by absorbing infrared radiation
- 9. movement of heat by massive motion within the atmosphere sion of heat or electricity or sound
- 11. the mass of air surrounding the Earth
- 15. warming: a rise in the average temperature of the earth's atmosphere