Most diverse organisms of an ecosystem are

Humus is

Select the incorrect statement regarding the process of decomposition.

Assertion: Death is important in the life cycle of an organism.
Reason: It helps in the recycling of elements in the environment.

Identify the correct statements:
$A.$ Detritivores perform fragmentation.
$B.$ The humus is further degraded by some microbes during mineralization.
$C.$ Water-soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
$D.$ The detritus food chain begins with living organisms.
$E.$ Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the options given below:

Which of the following is not a step of decomposition?