Across
- 6. The process of change from simple manufacturing methods to those using machines.
- 8. A very cold period of climate change where ice covered most of the planet.
- 9. The heating up of the earth's atmosphere believed to be the result of the burning of fossil fuels.
Down
- 1. The way that gases in the atmosphere trap some of the heat from the sun.
- 2. How well off a person or a country is.
- 3. How the average temperature changes over a period of time.
- 4. Different countries agree on the same thing
- 5. Gas produced by Cow flatulence
- 7. Gases used in aerosol and refrigeration products