Discusses role of human populations in local ecosystems, factors affecting population growth, and human adaptability to environmental stress. Detailed consideration of case studies of small-scale societies in different ecosystems. Prereqs., ANTH 2010 and 2020, or EBIO 1210 and 1220. Same as ANTH 5150. Prerequisites: Restricted to students with 57-180 credits (Juniors or Seniors).