Across
- 2. the process of decaying
- 7. he layer of the earth's atmosphere above the troposphere
- 8. when clouds get heavy they_____
- 10. excessive carbon dioxide in atmosphere
- 12. when nitrogen is converted into ammonia
- 16. collective name of substances in living organisms
- 17. caused by UV rays
- 20. elemental form of carbon
- 22. landmass of earth
- 24. black impurities in air
- 25. structure built to trap heat
- 27. used to plant plants
- 30. it is z form of precipitation with elevated levels of nitric acid and sulphuric acid
- 31. process of gas to liquid
- 32. organism which is a part in weathering
- 33. the process of burning
- 35. process of liquid vaporizing into gas
Down
- 1. used to make concrete
- 3. released by humans through resperartion
- 4. flash of light during rain
- 5. a global ecosystem composed of living organisms
- 6. harmful rays of sun
- 9. layer of air that cover the earth
- 11. organism that is involved in nitrogen fixation
- 13. fuel made by fossils
- 14. the non living aspect of earth
- 15. ozone depleting substance
- 18. process of plants making food
- 19. its a mix of fog and smoke
- 21. 71% in air
- 23. process of intake of oxygen and release or carbon dioxide
- 26. a colourless or pale yellow corrosive poisonous liquid acid with strong oxidizing properties, made in the laboratory by distilling nitrates with sulphuric acid.
- 28. 21% in air
- 29. the living aspect of earth
- 30. molecules used with carbon dioxide,oxygen,nitrogen etc
- 34. industrial form of nitrogen fixation