Or microbe, is an organism too small to be seen by the human eye.
Or microbe, is an organism too small to be seen by the human eye. Common microorganisms include bacteria and some fungi. Viruses are sometimes also included, though it is controversial whether they can be considered as living. Although some microbes cause disease, most are harmless or even useful.
Common microorganisms include bacteria and some fungi. Viruses are sometimes also included, though it is controversial whether they can be considered as living. Although some microbes cause disease, most are harmless or even useful.