Question

useful and harmful microrganisms

Answer 1

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$\mathfrak{\blue{Answer.}}$Microorganisms are small organisms invisible to the naked eye because of their extremely small size. They are grouped into various groups likeBacteria, fungi, algae, protozoa andviruses. Many of these organisms are useful to human and nature while some are harmful and even cause diseases.
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Answer 2

microorganism are small organism invisible to the naked eye because of their extremely small size they are grouped into various group like bacteria , fungi ,algae, protozoa and Viruses . many of these organism are useful to human and natural while some some are harmful and even cause diseases