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    • Plant showing leaves and root nodules
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 16 May 2016 Size: 98 KB Referencing Hub media

    Legumes can have small swellings on their roots called nodules. Soil bacteria living in these nodules are able to actively fix nitrogen.

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      The nitrogen cycle

      Nitrogen is the most abundant element in our planet’s atmosphere. Approximately 78% of the atmosphere is made up of nitrogen gas (N2). Rights: Copyright 2013. University of Waikato. All rights ...

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