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    • This diagram divides the essential elements into 3 main groups.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 17 September 2009, Updated 4 April 2019 Size: 250 KB Referencing Hub media

    25 elements are known to be essential to life. This diagram divides the essential elements into three main groups depending on the amount needed.

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      ARTICLE

      The essential elements

      As our knowledge of the chemistry of living systems (biochemistry) increases, we learn more about essential elements. Mammals like ourselves are thought to use only 25 of the 116 known elements ...

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