In addition to differentiation by species, zoology also encompasses other types of research, such as animal physiology, behavioral ecology, evolutionary biology and ethology, the study of animal behavior.
Public health is personal. Public health professionals focus on preventing disease and injury by promoting healthy lifestyles. They implement educational programs, develop policies, administer services, conduct research, and regulate health systems to achieve these goals.
After assessing their audiences' needs, health educators must decide how to meet those needs. Health educators have a lot of options in putting together programs to that end. They may organize a lecture, class, demonstration or health screening, or create a video, pamphlet or brochure.