Osmotrophs belong to

Identify the processes $P, Q,$ and $R$ in the following descriptions:
$I -$ The process of breaking down detritus into smaller particles $- P$
$II -$ Bacterial and fungal enzymes degrade detritus into simpler inorganic substances $- Q$
$III -$ Water-soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts $- R$
Select the correct option for $P, Q,$ and $R$.

In which step of the decomposition process do water-soluble inorganic nutrients enter the soil?

What is common to earthworm,mushroom,soil mites,and dung beetle in an ecosystem?

Humus is ....... in nature.

Identify the organisms that initiate the detritus food chain or food web.