Relationship of biogeochemical cycles in the atmosphere, lithosphere, and biosphere to global chemical cycles and planetary climatic conditions. GES degree foundation and capstone course. GES majors only. A-F only. Pre: 201, 310/310L or ATMO 310/310L or OEST 310/310L, BIOL 172/172L, CHEM 162/162L, ERTH 101/101L, MATH 241, MATH 243 & 252A, MATH 373 (or ECON 321), ATMO 200, PHYS 170/170L, and PHYS 272/272L; or consent. (Fall only) (Cross-listed as GES 401)