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What is the study of microorganisms called?

Answer
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Hint: In soil, water and air and even in the human body and the plants and other animals, microorganisms live everywhere.

Complete Answer:
- Both unicellular species contain microorganisms, and so they are highly diverse.
- All of the Bacteria and Archaea are microbes of the three aspects of life defined by Carl Woese. These were historically grouped as Prokaryotes in all domain structures, and the other was the eukaryotes.
- Both multicellular species and certain unicellular protozoans and protists form the third Eukaryota domain. Some species are bound to protists and few to green plants.
- As model organisms, microbes are important instruments of biology and have been put to use in biological weapons and bioterrorism. A critical part of fertile soil is microbes.
- The science of microorganisms, that are microscopic unicellular or a cluster of cell organisms, is microbiology. In humans, plants, and wildlife, microorganisms cause illnesses.
- Nevertheless, they can also be helpful to man in many respects. In the manufacture of many agricultural products, microorganisms assist in developing drugs, maintaining the air safe, in processing and in science.

Note: Microorganisms made up the human microbiota in the body of humans, including the important gut flora. Microbes are the bacteria liable for certain infectious diseases and are, as such, the focus of hygiene steps.