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Unformatted text preview: o 41,000-year cycle Croll also predicted the impact of feedback mechanism o Albedo: reflectance of light Plate tectonics o Movement of continents with respect to poles o Formation and erosion of mountain ranges Ca-rich minerals eroded as mountains uplifted. Ca washed to ocean Marine organisms combine Ca with CO2 to form shells. Remove CO2 from atmosphere o Interruption of large-scale weather patterns Change in atmosphere o Large igneous provinces: SO2, dust, CO2 Green house gases o H2O (water vapor) naturally occuring o CO2 (carbon dioxide) naturally occurring/ human activitied o CH4 (methane)naturally occurring/human activated o NiO2 (nitrous oxide) o CFCs (chlorofluorocarbons) o HFCs (halofluorocompounds) o PFCs (perfluorcarbons)...
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- Spring '08