Bactia is the scientific name for the domain Bacteria. It is the name of the prokaryotic micro-organisms, which are the most abundant and best-known type of life on Earth. They are very important in the environment and in the food web. Bactia is one of the largest and best-known taxa in the tree of life. Bactia is a natural group of prokaryotic micro-organisms. These micro-organisms are able to live in different types of environments and in many different ways. Some of them are able to grow in the presence of humans and other animals.

Bactia is the largest and best-known taxon of prokaryotic micro-organisms. It includes many different species that are able to live in the environment of the planet Earth. These species are very important for the environment. Some of them are very good at fixing nitrogen and some are able to grow in the presence of oxygen.