Fungi in a forest ecosystem is

$A$: Detritus food chain begins with detritus.
$R$: Detritivores like fungi and bacteria are major decomposers in such food chains.

Raw material for decomposition represented by dead organic matter is

Apart from plants and animals, microbes form a permanent biotic component in an ecosystem. While plants are referred to as autotrophs and animals as heterotrophs, what are microbes referred to as? How do microbes fulfill their energy requirements?

If decomposers are removed from an ecosystem,what will happen?

The breakdown of detritus into smaller particles by earthworm is a process called