Here's a breakdown of what they study:

* Microorganisms: These are tiny living things that are too small to be seen with the naked eye, like bacteria, viruses, fungi, and some algae.

* Their Biology: Microbiologists study the structure, function, growth, and evolution of these organisms.

* Their Impact: Microbiologists also study the roles microorganisms play in various environments, including the human body, soil, water, and food. They may also study their impact on health, disease, and industry.

There are many different specializations within microbiology, such as:

* Bacteriologist: Studies bacteria.

* Virologist: Studies viruses.

* Mycologist: Studies fungi.

* Parasitologist: Studies parasites.

So, if you're interested in the fascinating world of tiny life, a career in microbiology might be for you!