Across
- 4. gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants
- 7. A cycle which comprises the weathering of an existing rock, followed by the erosion of minerals, their transport and deposition, then burial
- 10. gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate
- 11. the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition
- 14. state or process of rotting
- 15. Natural or industrial process that causes free nitrogen
- 16. oxidation of ammonium salts to nitrites
- 17. process of burning something
- 22. process of Formation of water vapours by heating
- 23. type of biogeochemical cycle in which the reservoir is the air or the oceans (via evaporation)
- 24. envelope of gases surrounding the earth or another planet
- 25. Another word for rain
Down
- 1. Conversion of vapour or gas to liquid
- 2. second layer of the atmosphere as you go upward
- 3. layer in the earth's stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun
- 5. action of clearing a wide area of trees
- 6. Process of breaking down nitrogen containing chemicals from dead organic matter
- 8. loss of nitrogen from soil
- 9. biogeochemical cycle where various carbon compounds are interchanged among the various layers of the earth, namely, the biosphere, geosphere, pedosphere, hydrosphere and atmosphere
- 12. Process of breathing
- 13. way oxygen moves in arious forms through nature
- 18. Exhalation of water vapour through stomata
- 19. Process used by plants to make energy in form of sugar
- 20. process that occurs when gases in Earth's atmosphere trap the Sun's heat
- 21. way water moves between being water vapour to liquid water then back to water vapour