Biology

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