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.
A bachelor's degree in public health can lead to a career as a health educator or healthcare social worker. Health educators work with individuals and the community to inform them about healthy living, disease prevention and other health-related issues.