ELI5 mode
A microorganism is a microscopic living entity, such as a bacterium, virus, or fungus, that is invisible to the naked eye and exists in vast numbers across diverse environments. These tiny powerhouses drive essential processes like nutrient cycling in ecosystems and fermentation in food production, but they can also pose risks as pathogens in human health. In today's world, microorganisms are harnessed for innovations in biotechnology, from biofuels to genetic engineering.
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