Organisms that feed on dead organisms for nutrients are called decomposers.

Here's why:

* Decomposers are a vital part of the ecosystem. They break down dead plants and animals, returning nutrients to the soil.

* Scavengers are also involved in feeding on dead organisms, but they are typically larger animals like vultures or hyenas. They don't break down the material to the same extent as decomposers.

Examples of decomposers include:

* Bacteria

* Fungi

* Some insects (like dung beetles)

* Earthworms