Here's why:
* Living: Microorganisms have all the characteristics of life, such as growth, reproduction, metabolism, and response to stimuli.
* Small: They are microscopic, meaning they can only be seen with a microscope.
Examples of microorganisms include:
* Bacteria: Single-celled organisms that can be found in various environments.
* Viruses: Tiny infectious agents that require a host to replicate.
* Fungi: Organisms that can be single-celled or multicellular, like mushrooms and yeasts.
While some microorganisms can cause disease, many are beneficial and play important roles in the environment, such as decomposing organic matter and helping with digestion.
