The cycling of nutrients in an ecosystem will stop if which of the following are removed?

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 $R$.

If we completely remove the decomposers from an ecosystem,its functioning will be adversely affected because:

The process by which humus is degraded by some microbes to release inorganic nutrients is known as

Breakdown of detritus into smaller particles by earthworm is a process called

Identify the factors that decrease the rate of decomposition.