Which group of organisms helps prevent the accumulation of organic wastes in nature?

Bacteria play a critical role in the ecosystem by decomposing organic matter. They break down dead plants, animals, and waste products through processes such as decomposition, which recycles nutrients back into the soil. This activity helps prevent the accumulation of organic wastes, allowing for the continuity of life and the health of ecosystems.

In contrast, while rabbits contribute to the ecosystem by participating in the food chain and the cycling of nutrients through their waste, they do not actively decompose organic matter. Mosses and ferns, as plants, primarily function in photosynthesis and contribute to habitats but do not have the specific role of breaking down waste materials like bacteria do. Therefore, the unique and essential function of bacteria as decomposers makes them the group of organisms that helps prevent the accumulation of organic wastes in nature effectively.