The student in environmental, population, and organismic biology will study the following topics: the diversity of living organisms, cellular structures and processes, Mendelian, molecular, and population genetics, and ecological processes at the population, community, biome and bioshpere levels. The student will gain a knowledge of the sources of variation within and among populations, and the mechanisms of natural selection. Further, the student will gain knowledge of scientific methods and of the relations among theory, experiment, data, and data analysis. Degrees offered are B.A., M.A., Ph.D. A minor is also offered. Environmental, Population, and Organismic Biology, University of Colorado, CB 334, Boulder, CO 80309-0334.