Definition: A microcosmian, also known as a microcosmic system or a microcosmic ecosystem, is a type of ecological system in which organisms are closely related to each other but not necessarily dependent on one another. Microcosms can be found in various environments such as forests, wetlands, and grasslands, where different species coexist with each other through mutualistic relationships. In these ecosystems, the microorganisms that live within a given ecosystem are often considered "microcosmic" because
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