Very small organisms or micro-organisms like bacteria , fungi etc. are the dissociators of the ecosystem. They decompose the carcasses of plants or animals and take food from them. The carcasses of plants and animals are re-mixed with the soil. These mixed ingredients can then be taken back as food by the plants. As a result of this action of the separator, the plant constantly gets its nutrients from the soil. As a result, the environment remains beautiful. This is why separators are so important in nature.