Nitrogen Cycle

Nitrogen Cycle

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Storyboard Text

  • Hi! I'm a nitrogen cell and I am entering the soil!
  • I'm helping plants grow!
  • The rabbit ate the grass & absorbed me as a nitrate.
  • During nitrogen fixation, bacteria converts nitrogen gas (N2) into ammonia (NH3) which plants can use.
  • The rabbit ate me, decomposed and bacteria turned me back into ammonia and nitrates.
  • In nitrification, ammonia is converted into nitrate ions which plants can take in as nutrients. 
  • Living organisms use up the nitrogen that is available to them.
  • Through ammonification, decomposer bacteria convert nitrogen rich waste products into simpler ones. 
  • In dentrification, bacteria convert simple nitrogen compounds back into nitrogen gas (N2) which is released back into the atmosphere. 
  • However, humans have affected the nitrogen cycle by increasing the amount of nitrogen. This has occurred through fossil fuel burning, automobiles, and factories. 
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