Final answer:
Public health focuses on communities and populations, population health considers broader factors influencing health, and global health addresses international health issues.
Step-by-step explanation:
Public health, population health, and global health all have different areas of focus.
Public health focuses on improving and protecting the health of communities and populations. It includes activities such as monitoring health, promoting healthy behavior, and implementing disease prevention measures.
Population health also focuses on the health of communities, but it takes a broader approach by considering the social, economic, and environmental factors that influence health outcomes.
Global health addresses health issues on an international scale, emphasizing the health of populations around the world. It involves efforts to address global health challenges, such as infectious diseases, access to healthcare, and health disparities.