This course surveys the major principles underlying the interactions between living organisms and their enviroment. Both plant and animal examples will be used o illustrate the basic ecological processes. Emphasis is placed on the characterization of different physical environments; ecosystem processes ssuch as ecological energetics and nutrient cycling; and current organismal concepts of adap- tation, niche, population dynamics, life-history phenomena, organismal interactions and community organization. Major environmental issues concerning humans and their cultures will also be presented. Prerequisites: BIOL 102, CHEM 107 and 117. (F;S;SS)