This student text presents instructional materials for a unit of social science within the Biomedical Interdisciplinary Curriculum Project (BICP), a two-year interdisciplinary precollege curriculum aimed at preparing high school students for entry into college and vocational programs leading to a career in the health field. This particular unit deals with world cultures and their relationship to health and environment. Reading, illustrations, and activities are presented that deal with the social structure of Afghanistan. (CS)