The document summarizes four social science disciplines: 1. Anthropology is the study of humanity, using ethnography as its main method. It draws on various sciences to understand human culture and societies. The four subfields are archaeology, cultural anthropology, linguistic anthropology, and biological anthropology. 2. Geography studies the physical features of the Earth and how humans affect and are affected by the environment. Physical geography examines natural phenomena while human geography focuses on population, land use, resources, and industries. 3. Sociology is the scientific study of human society and social behavior. It analyzes social groups, processes, and interactions from individual to global levels using empirical research methods.