The Nitrogen Cycle

Description

GCSE Biology (B3 - Life on Earth) Mind Map on The Nitrogen Cycle, created by Leah Firmstone on 09/22/2014.
Leah Firmstone
Mind Map by Leah Firmstone, updated 6 months ago
Leah Firmstone
Created by Leah Firmstone over 10 years ago
25
1

Resource summary

The Nitrogen Cycle
  1. NITROGEN FIXATION
    1. LIGHTNING
      1. NITROGEN - FIXING BACTERIA
        1. Converts nitrogen gas into soluble ions (nitrates) that plant roots can absorb.
        2. THE HABER PROCESS
          1. Converts nitrogen gas into ammonia for use in fertilizers
          2. NITRATES
            1. Plant roots absorb nitrates from the soil to build up proteins for growth ect.
              1. When a plant is eaten, the nitrogen compounds are passed onto the next organism and so on.
          3. NITRIFICATION
            1. DECOMPOSERS
              1. Waste, dead plants and dead animal bodies are broken down by decomposers in the soil.
                1. Nitrogen is returned to the soil as ammonium ions.
              2. NITRIFYING BACTERIA
                1. Can convert the ammonium ions into nitrates for plants to absorb.
              3. DENITRIFICATION
                1. DENITRIFYING BACTERIA
                  1. Breaks down nitrates in the soil and returns nitrogen gas to the air.
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