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Biogeochemical Cycles

Biogeochemical Cycles. 12/6/11. What are biogeochemical cycles?. Biogeochemical cycles= complete path a chemical takes through the atmosphere, hydrosphere (water), lithosphere(earth’s crust and mantle) and biosphere (plants and animals) Bio= life Geo=earth Chemicals= elements and compounds.

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Biogeochemical Cycles

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  1. Biogeochemical Cycles 12/6/11

  2. What are biogeochemical cycles? • Biogeochemical cycles= complete path a chemical takes through the atmosphere, hydrosphere (water), lithosphere(earth’s crust and mantle) and biosphere (plants and animals) • Bio= life • Geo=earth • Chemicals= elements and compounds

  3. What is the rock cycle? • Sedimentary • Igneous • Metamorphic

  4. What is the Hydrologic Cycle? • The water Cycle • Precipitation • Evaporation • Transpiration • Condensation

  5. What is carbon cycling? • Food Chain • Decomposition • Carbon emissions

  6. What is Nitrogen Cycling? • Nitrogen fixation: N2NH4 NO2  NO3 • Factory emissions and Eutrophication

  7. What is Phosphorus Cycling? • Minerals/Soil • Fertilizer run off, sewage

  8. Do humans effect biogeochemical cycling? • Humans are responsible for nearly half the fixed nitrogen that is deposited on land. • Fossil Fuels release carbon emissions when burned  greenhouse gases • Sulfur, phosphorus and Nitrogen released through mining and deforestation

  9. How are the Nitrogen, Phosphorus and Carbon cycles linked? • Nitrogen is found in chlorophyll, phosphorus is taken up from soil into plants, which enter the food chain (carbon cycle).

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