Final answer:
Nonpathogenic bacteria that live on dead matter are known as decomposers or saprophytic bacteria. They break down organic matter and return nutrients to the environment.
Step-by-step explanation:
Nonpathogenic bacteria that live on dead matter are known as decomposers or saprophytic bacteria. These bacteria play a crucial role in the ecosystem by breaking down organic matter and returning nutrients to the environment. Some examples of nonpathogenic decomposer bacteria include soil-dwelling Gram-positive bacteria and certain members of the Deltaproteobacteria group.
Learn more about Nonpathogenic bacteria