Relationships of organisms to their environment. Topics will include the relationships of the physical environment, including climate, to animal and plant distribution; energy relationships; the niche concept; physiological ecology; community and population structure; succession; interactions of populations and maintenance of population size; and biogeography. Prerequisites: BIOL 113, 114, 133, 134, 246, MATH 132 or higher. Three lecture and three laboratory hours per week. Credit, 4 hours. Offered fall semester.