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AS Biology Unit 1

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Nitrogen Cycle

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A-Level Biology Mind Map on Nitrogen Cycle, created by Phill Lynch on 27/11/2014.

Mind Map by Phill Lynch, updated more than 1 year ago

	Created by Phill Lynch over 10 years ago

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Resource summary

Nitrogen Cycle

Nitrogen Fixation
1. Ammonia (NH3)
  1. Ammonium (NH4+)
  2. Plants
    1. Animals
      1. Plants > Animals via Ingestion
      2. Animal > NH4+ by putrification
    2. NH3 > Plants via absorption from roots
    3. 1. Plants > NH4+ by De-amnifiaction
    4. NO3- > Plants via absorption from root
  3. NH3 > NH4+ By dissolving
  4. Nitrites (NO2-)
    1. Nitrates (NO3-)
      1. NO2- > NO3- by Nitrification using Nitrosomonas
      4. NO3- > N2 via de-nitrification
    2. NH3 > NO2- by Nitrification using Nitrosomes
2. By Azotobacter and Rhizobium
N2 in the air

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