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    Combined Science GCSE

    Decomposition

    What Decomposition means in Combined Science GCSE, as defined for Pearson Edexcel.

    Definition of Decomposition

    The breakdown of dead matter and waste by microorganisms (bacteria and fungi).
    Pearson Edexcel · Ecosystems and material cycles (study guide)

    Topics that use Decomposition

    Related terms

    Using Decomposition in the exam

    Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.

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    All Combined Science GCSE terms