Decomposers are organisms of the ecological division that help decompose dead organic matter.
They are known as scavengers as they derive nutrition from the dead bodies of the organisms via secreting digestive juices.
They lie at the last stage in an ecosystem and receive the lowest amount of energy.
They also help to renew the essential nutrients of the soil.
They help to clean the environment.
Bacteria and fungi are categorized under decomposers.
Consumers:
They are the organisms that consume food produced by the producers or directly producers.
They are unable to synthesize their food.
There are primary consumers (consume producers), secondary consumers (consumer primary consumers in a food chain), and tertiary consumers (top-level consumers).