Earthworms facilitate the breakdown of dead plant and animal remains into smaller particles in the soil. Based on this specific functional role among the biotic components of an ecosystem, they are classified as:

Step-by-step solution

Earthworms feed on dead plant and animal remains (detritus) and break them down into smaller particles through a process called fragmentation. Organisms that perform this specific function are classified as detritivores. Decomposers, such as bacteria and fungi, secrete digestive enzymes to break down complex organic matter into simpler inorganic substances. Primary consumers feed on living plants, and secondary consumers feed on primary consumers. Answer: Detritivores