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Microbiology explores microscopic life forms including algae, fungi, bacteria, and viruses that are invisible without magnification. These tiny organisms are incredibly numerous and varied, impacting human life in both harmful and beneficial manners.
Certain microorganisms trigger illnesses in people, animals, or plants, making them crucial for biosecurity concerns. Conversely, some microbes provide advantages, like those employed for pest control (biological control) or breaking down toxic substances (biodegradation). Many microorganisms play fundamental roles in sustaining ecosystems, such as producing oxygen and vital nutrients.
This extensive field examines bacteria, archaea, eukaryotic microbes, viruses, and encompasses environmental, evolutionary, and molecular aspects of microbiology.