While the classification of life is constantly evolving, traditionally, the Monera kingdom includes all prokaryotic organisms, encompassing bacteria and archaea.
It's important to note that:
* Prokaryotes are single-celled organisms without a nucleus or other membrane-bound organelles.
* Eukaryotes, on the other hand, have a nucleus and other membrane-bound organelles.
Therefore, all other kingdoms of life, such as Protista, Fungi, Plantae, and Animalia, are composed of eukaryotic cells.