However, it's important to note that the classification of life into five kingdoms (Monera, Protista, Fungi, Plantae, and Animalia) is an older system. Modern classification systems, like the three-domain system, have largely replaced it.
In the three-domain system, prokaryotes are divided into two domains:
* Bacteria
* Archaea
While both are prokaryotic, they have significant differences in their genetics, biochemistry, and evolutionary history.
