Hofstra Geology 001 Exam 3 Review

Hofstra Geology 001 Exam 3 Review - Review Outline for Exam...

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Review Outline for Exam 3, Geology 001 Bennington Organic Carbon Cycle Carbon in various Earth systems reservoirs – CO 2 in atmosphere, organic carbon in animals, plants, soils, fossil fuels. Exchange of carbon from atmosphere to organic matter via photosynthesis. Exchange of carbon from organic matter to atmosphere via oxidation. Removal of CO 2 from the atmosphere due to burial of organic carbon in the crust of the earth – formation of fossil fuels (coal, oil, natural gas). Burning of fossil carbon (coal, oil, natural gas) and changes in land use (deforestation) increase atmospheric carbon dioxide– fossil carbon removed from the atmosphere in the past is being returned to the atmosphere by human activities at a very rapid rate. Inorganic Carbon Cycle Transfers carbon between atmosphere, oceans, rock, and mantle Solubility pump – oceans can dissolve 50X more CO 2 than atmosphere can hold CO 2 is transferred to the deep ocean by vertical circulation. As CO 2 dissolves in the ocean, the ocean acidifies.
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