Question

how scavengers are different from decomposers

Answer 1

The main difference between scavenger and decomposer is that scavenger consumes dead plants, animals or carrion to break down the organic materials into small particles whereas decomposer consumes the small particles produced by the scavengers. ... Decomposers are manly fungi. Earthworms and bacteria are also decomposers.

Answer 2

Scavengers are those that eat dead animals only,and only depend on dead animals rather than decomposers which decompose both dead and decaying plants and animals.
Some scavengers are:vulture,fox
Decomposers:usually some micro organism ;bacteria