I was just looking up if baker's yeast is a fungus and I discovered domains. There's only 3 of them: Archaea, Bacteria, and Eukarya which is retarded. The 5 Kingdoms are Animals, Plants, Fungi, Bacteria and Single Cell Organisms. Regnum is also the Latin for kingdom and domain is regio which is the same word with a different conjugation. Is this standard stuff they teach in school or is this something on the fringe?