These decomposers play the crucial role of breaking down organic waste into usable nutrients, which are then held in the resulting humus .
(These decomposers; play; the crucial role of breaking down organic waste into usable nutrients) (usable nutrients; are held; L:in the resulting humus; T:then)
These decomposers usable nutrients
play are held
the crucial role of breaking down organic waste into usable nutrients
L:in the resulting humus T:then