Answer: Detritivore
Explanation: These are vital organisms that grow by breaking down dead and decaying matter. Some of these are scavengers - macro-organisms that feed on dead or decaying matter, e.g. flies, cockroaches, earthworms. Others are decomposers, generally microscopic bacteria and fungi, that break down wastes. These are also called saprophytes and play an important role in returning nutrients to the soil from dead and decaying matter.
