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Use "microorganisms" in a sentence
"These miniature, enclosed aquariums, which contain microorganisms in filtered sea water, employ space age technology initiated by NASA research into self-sustaining communities."
"I used it to look at everything I could find: microorganisms from the nearby pond, leaves and blades of grass."
"Airborne exposures to pathogenic microorganisms is considered to be a nearly inconsequential risk, except for direct exposures to liquid aerosols (mists) such as somebody sneezing directly into your face."