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6.hydros.lithos.10 - Properties of the Hydrosphere and...

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Properties of the Hydrosphere and Lithosphere The Hydrosphere BOD, COD and Eutrophication The Lithosphere Typical Soil Horizons Cation Exchange Capacity Groundwater Summary and Conclusions
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I. The Hydrosphere
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Some Important Properties
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Hydrosphere – Principal Oceanic Currents
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II. BOD, COD and Eutrophication Increased sediments and nutrients cause increased plant and animal diversity The result is a meadow.
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Oxygen-Demanding Substances Substances that require O 2 for degradation. Chemical Oxygen Demand (COD) – O 2 required for abiotic degradation of a chemical over 5 days at room temperature. Biological Oxygen Demand (BOD) – O 2 required for microbial degradation of a chemical over 5 days at room temperature.
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Cyclic Process of Eutrophication
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Anthropogenic Sources of Nutrients There are numerous sources of plant nutrients.
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III. The Lithosphere – Soils Composition Typical Soil
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Soil Texture r Soils are composed of particles of a variety of sizes.
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