Question

Detritivores breakdown detritus into smaller particles. This process is called :

Answer 1

The process of the breakdown of detritus into smaller parts by detritus like earthworms called fragmentation.
Humification is a process of formation of humic substances (organic matter that has reached maturity) decomposed from plant remains.
Decomposition is the process by which bacteria and fungi break dead organisms into their simple compounds.
Catabolism is the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy.