Which domain of life includes humans?

Humans are classified within the domain Eukarya, which encompasses all organisms with complex cells that contain a nucleus and other membrane-bound organelles. This domain includes a variety of life forms such as animals, plants, fungi, and protists. The defining feature of eukaryotic cells is the presence of a well-defined nucleus that houses their genetic material, allowing for more complex structures and functions compared to prokaryotic cells, which are found in the Bacteria and Archaea domains.

In contrast, the domain Bacteria consists of single-celled organisms that lack a nucleus and have simpler structures. Similarly, the domain Archaea consists of prokaryotic organisms as well, but they are biochemically distinct from bacteria and often thrive in extreme environments. The term "Monera" is an older classification that grouped bacteria and archaea together under one category, which is no longer commonly used in modern taxonomy. Thus, Eukarya is the accurate domain containing humans and other complex life forms.