Archaea and Bacteria are both examples of prokaryotes. Prokaryotes are unicellular organisms that lack a nucleus and other membrane-bound organelles, which distinguishes them from eukaryotes, organisms whose cells contain a nucleus.
Archaea and Bacteria share several characteristics, such as their small size and simple cellular organization. However, they belong to distinct domains of life. Archaea often live in extreme environments, such as hot springs or salty lakes, and have unique biochemical pathways that allow them to thrive under these conditions. Bacteria, on the other hand, are more diverse and can be found in various environments, including soil, water, and even the human body.
In summary, both Archaea and Bacteria are classified as prokaryotes due to their lack of a true nucleus and other defining cellular features found in eukaryotic organisms.