Which one of the following processes during decomposition is correctly described?

  • A
    Leaching $-$ Water-soluble inorganic nutrients rise to the top layers of soil
  • B
    Fragmentation $-$ Carried out by organisms such as earthworm
  • C
    Humification $-$ Leads to the accumulation of a dark-coloured substance humus which undergoes microbial action at a very fast rate
  • D
    Catabolism $-$ Last step in the decomposition under fully anaerobic condition

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