Microbial world Organisms Infectious agents (iving (non-living) Prokaryotes eukaryotes viruses viroids prions (unicellular) Eubacteria Archaea Algae FungI Protozoa Other (unicellular (unicellular (unicellular) multicellula or organisms multicellular multicellularMicrobial world Organisms (living) Infectious agents (non-living) Prokaryotes (unicellular) eukaryotes viruses viroids prions Eubacteria Archaea Algae (unicellular or multicellular Fungi (unicellular or multicellular Protozoa (unicellular) Other multicellula organisms