This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Biological classification Pengo.svg NOTOC validSVG Created for About the Domains This diagram implies Domains Kingdoms Woese et al Carl Woese Otto Kandler Mark Wheelis Towards natural system of organisms proposal for the domains Archaea Bacteria and Eucarya Proceedings of the National Academy of Sciences of the United States