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.
Health educators are often responsible for writing educational material, newsletters, public information reports, and grant proposals. They may specialize in various areas that include clinical health, public health, community health, industrial health, and school health.