Linked from
The 83 pages that link to Nutrient cycling, each with the reason it gives.
ScavengingNarrower topic: Scavengers return nutrients from carcasses to food webs and ecosystems.
Leaf litterNarrower topic: Litter decomposition returns nutrients taken up by plants to the soil.
CarrionNarrower topic: Carrion returns nutrients stored in animal bodies to ecosystems.
DecomposerNarrower topic: Decomposition is a key route by which nutrients re-enter ecosystems.
Plant litterNarrower topic: As litter decomposes, its nutrients re-enter soil and biological cycles.