AP BIOLOGY

Detailed explanation-1: -The correct answer is Earthworm. The earthworm is not a scavenger. A scavenger is an organism or animal that mostly consumes decaying biomass, such as meat or rotting plant material. Examples are hyenas, vultures, crows, mushrooms, termites, etc.

Detailed explanation-2: -Scavengers, other carnivores, and omnivores, organisms that consume both plants and animals, are the third trophic level.

Detailed explanation-3: -However, the research community has become increasingly aware of the critical role scavenging plays in the stability of ecosystems and food webs. By consuming dead animals, called carrion, scavengers remove dead carcasses from the environment-a valuable service that goes well beyond environmental aesthetics.