Which of the following processes is correctly described during decomposition?

  • A
    Leaching - Water-soluble inorganic nutrients rise to the top layers of the soil.
  • B
    Fragmentation - Carried out by organisms such as earthworms.
  • C
    Humification - Leads to the accumulation of a dark-colored substance that undergoes microbial action at a very fast rate.
  • D
    Catabolism - The final stage of decomposition which occurs completely under anaerobic conditions.

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The decomposition of organic compounds in the presence of $O_2$ without the development of odoriferous substances is known as:

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$(1)$ Decomposition is largely an oxygen-requiring process.
$(2)$ Warm and moist environment slows down the decomposition process.
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