Discussed the basic elements of the scientific method in a historical science, like paleontology. Discussed the relationships between body size, metabolism, and metabolic rate. Discussed the differences between endotherms and ectotherms, and the implications of physiology for locomotion and circulation in animals of the two different metabolic types. Large sauropods with their very large bodies and long necks must have had a four-chambered heart in order to pump blood to brain and back to heart.
Equal weight has non-equal energy requirements.