Across
- 2. serious tropical disease spread bu mosquitos
- 4. gases in the atmoshpere that absorb heat and energy (2 words)
- 6. N2O (2 words)
- 7. the realase of a substance into the atmosphere
- 9. ancient remains of plants and animals that are stored underground in the form of coal,oil and natural gas (2 words)
- 10. the angle of the earths axis
- 11. a colorless, odorless, non-poisonous gas (2 words)
- 12. The total amount of greenhouse gases that are emitted into the atmosphere each year by a person (2 words)
- 14. Any exploratory hole drilled into the Earth or ice to gather geophysical data.
Down
- 1. Energy resources that are naturally replenishing such as biomass, geothermal, solar, wind (2 words)
- 3. Cities with populations over 10 million.
- 4. Trapping and build-up of heat in the atmosphere near the Earths surface (2 words)
- 5. the clearing of trees, transforming a forest into cleared land
- 8. the pattern of weather over a 30 year peroid
- 13. Gas or liquid fuel made from plant material (biomass)