An introduction to the study of the Earth's natural systems and the forces that can affect them. Students will explore the Earth's natural environments and the interactions of organisms with each other, as well as their physical surroundings and the sources and effects of stress on natural environments. Topics include nutrient cycling; the hydrologic cycle; trophic structures and interactions; human populations; soil, water, and air pollution; and the relationship of science to policy making. Liberal Arts Core Designation: Natural Science (NS). (3)