Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.
When Carl Woese developed the modern system of classification, he broke the previous kingdom of __monerans_ into the two kingdoms of Bacteria and Archaea.
