Whereas Earth has only one satellite (aka. the Moon), Mars has two small moons: Phobos and Deimos. And whereas the vast majority of moons in our Solar System are large enough to become round spheres similar to our own Moon, Phobos and Deimos are asteroid-sized and misshapen in appearance.
Microorganisms, like certain bacteria and yeasts, living on the human skin or in the nose, mouth, throat, small and large intestine and vagina, are part of the normal human flora; they prevent overgrowth of harmful microorganisms. Some of these microbes, when overgrow, may become pathogenic, though.
An organism that is microscopic or submicroscopic, which means it is too small to be seen by the unaided human eye. Supplement. Microorganisms were first observed by Anton van Leeuwenhoek in 1675 using a microscope of his own design. Examples of microorganisms include bacteria, fungi, archaea, and protists.Viruses and prions, although microscopic, are not considered microorganisms by others because they are generally regarded as non-living. Word origin: Related forms: microorganic, microoganismal (adjective).icroorganisms were first observed by Anton van Leeuwenhoek in 1675 using a microscope of his own design. Examples of microorganisms include bacteria, fungi, archaea, and protists. Viruses and prions, although microscopic, are not considered microorganisms by others because they are generally regarded as non-living.