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How does detritus give rise to humus?

Answer
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Hint: The term "detritus food chain" refers to a food chain that begins with dead organic matter. Microorganisms degrade the decaying organic material. Detritivores or decomposers are creatures that feed on dead organic matter or detritus. Predators consume these detritivores later on. The discharged products of one creature are used by another organism in the detritus food chain.

Complete answer:
Decomposition of debris produces humus, a dark-colored amorphous substance. Decomposition of humus takes a long time. The process of humification produces humus. Instead of inorganic chemicals, as in mineralisation, dead organic matter, usually plant remnants with lignin, is transformed into organic polymers in the humification process. Vermicomposting speeds up the humification process.
Decomposition is the breakdown of dead organic materials into inorganic compounds. Detritus is defined as dead organic matter/organisms or biomass. The steps of detritus decomposition are as follows:
Detritivores are responsible for fragmentation debris. It's a process in which detritivores eat dead organic stuff and break it down into smaller pieces.
Bacteria and fungi produce digestive enzymes over the debris in the following stage, catabolism. It aids in the production of organic and inorganic substances that are simple and soluble.
The bacteria may take up and immobilise some of this vitamin.
Nutrient leaching happens when nutrients penetrate deeper into the soil.
The decomposition process results in the creation of inorganic nutrients and humus.
Humification is the process of humus formation.
Mineralization is the process of releasing nutrients when the humus degrades further.

Note:
The word "decomposition" literally means "to break down." It usually refers to the breakdown or rupture of a complex organic substance into a simpler inorganic substance. It is one of the ecosystem's most important and necessary processes. As a result, breakdown is a metabolic process in which raw materials in the form of complex chemicals are taken in, processed, and ultimately converted into simpler compounds.
Decomposers are bacteria, fungus, and a few other microorganisms that start the decomposition process. To stay alive, they eat dead organisms.