Discuss how life has become a primary driver of conditions in the Earth's geosphere, hydrosphere, and atmosphere, and explore the biological inventions with the most revolutionary impact on the planet as we know it today. Examine concepts from the fields of geology, chemistry, microbiology, and macroecology. Marine Science 352 (Topic: Marine Geoecology) and 358 may not both be counted. The equivalent of three lecture hours a week for one semester.