Students in the Master's major may elect a concentration in biological, chemical, geological, or physical oceanography, or Marine Resource Assessment through course work and thesis research. CMS graduates are well prepared for positions in academia, industry, government agencies, and nongovernmental organizations at local to international levels. Biological oceanography seeks to understand the life histories and population dynamics of marine organisms and how they interact with their environment over space and time. Chemical oceanographers seek to understand the ways in which various elements are cycled within the oceans, and the reactions that influence biogeochemical cycles. Ocean chemists improve our understanding of the basic conditions under which ocean life thrives in seawater, and help predict the effects of anthropogenic and natural climate change on ocean composition. Geological oceanographers in the College of Marine Science conduct research from the continental margins to the deepocean seafloor. Their work extends from modern environments to millions of years present to understand and predict Earth surface and interior processes. Physical oceanography involves the study of water movement in the ocean. The College of Marine Science offers an interdisciplinary concentration in Marine Resource Assessment (MRA) as part of its M.S. and Ph.D. majors.