How many kingdoms are in the domain Archaea What is it?

The domain Archaea is traditionally divided into several kingdoms, with the most commonly recognized being Euryarchaeota, Crenarchaeota, and Thaumarchaeota, among others. Some classifications may include additional groups, but the exact number can vary depending on the taxonomy used. Archaea are distinct from bacteria and eukaryotes, characterized by unique biochemical and genetic properties that allow them to thrive in extreme environments.