Scavengers like flies and wasps first eat dead animals, breaking them into small bits. Then decomposers like bacteria and fungi take over to fully decompose the remains. Decomposers are crucial for breaking down waste and recycling nutrients back into the soil, without which plants would not receive nutrients and waste would overaccumulate on Earth. Examples of decomposers include fungi that break down organic materials, molds, mildews that decompose plants, bacteria that eat and digest tissues, and insects like cockroaches and springtails that further break down waste to be consumed by bacteria or eat decaying organic matter.