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Published byDonna King Modified over 9 years ago
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DO NOW Draw the hydrologic cycle Label all parts of your diagram
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Biogeochemical Nutrient Cycles
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Hydrologic Cycle
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Reserviors
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Residence Times
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Biogeochemical Nutrient Cycles Nitrogen Phosphorus Sulfur Carbon-Oxygen Hydrologic Rock
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The nitrogen cycle
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The phosphorus cycle
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The sulfur cycle
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The carbon-oxygen cycle
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The hydrologic cycle
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The rock cycle Rock cycle = The heating, melting, cooling, breaking and reassembling of rocks and minerals Rocks help determine soil chemistry, which influences ecosystems Helps us appreciate the formation and conservation of soils, mineral resources, fossil fuels, and other natural resources
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Newton’s Laws Conservation of Mass – mass cannot be created or destroyed, but can be changed to energy
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Newton’s Laws - First Thermodynamics – inertia – an object in motion stays in motion unless acted upon by an outside force
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Newton’s Laws - Second Thermodynamics – entropy– disorder increases Think of entropy as heat loss We must add more energy to compensate for the heat loss
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Hypoxia and the Gulf of Mexico’s Dead Zone (Read pp202-203) Observations: low oxygen levels - hypoxia Hypothesis: caused by nutrients (fertilizers) that ran into the Gulf from rivers Experiments: monitoring oxygen (long term), water sampling (N, NaCl. Bacteria, phytoplankton); observed life; analyzed historical data Results: phytoplankton receiving too much phosphorus from farming & sewage treatment plants
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