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.
Public health: The approach to medicine that is concerned with the health of the community as a whole. Public health is community health. It has been said that: Health care is vital to all of us some of the time, but public health is vital to all of us all of the time.. The mission of public health is to fulfill society's interest in assuring conditions in which people can be healthy.. The three core public health functions are: