Across
- 1. the earth is wrapped in a blanket of air called the
- 5. what type of radiation is absorbed by the atmpsphere and re-directed both upwards and downwards
- 7. what is a process by which thermal radiation from a planetary surface
- 12. what is being effected by the increase temperature caused by pollutants such as ferilisers being washed by farms
- 13. what occurs naturally in the atmosphere
- 14. what does life depend on to get its energy
- 15. what is the layer of colourless gas found in the stratosphere
- 16. the thermal radiation which is obsorbed in the greehouse gases is called
Down
- 2. what is characterised by decreasing temperature with height average rate of 3.5 degrees
- 3. what is increasing to effects of global warming
- 4. what are the chemical compounds found in the earths atmosphere
- 6. what comes from cattle as they digest their food
- 8. what is produced when plants die and rot
- 9. what is the difference in global temperatures between today and the ice ages
- 10. are causing global warming
- 11. what in the atmosphere stops the heat from expanding into space