In detritus-based food chains, decomposers are at the base of the food chain, and sustain the carnivores which feed on them.
(decomposers; are; at the base of the food chain; L:In detritus-based food chains) (decomposers; sustain; the carnivores which feed on them) (the carnivores; feed; on them)
decomposers decomposers the carnivores
are sustain feed
at the base of the food chain L:In detritus-based food chains
the carnivores which feed on them
on them