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Unformatted text preview: Environ. Test Prep: Systems: Feedback loops- goes in a circle Positive- moves it further in same direction Negative- moves it in an opposite direction Open- exchanges with other systems Closed- contained *The earth is open in reference to energy, closed in reference to mass Lithosphere- rock and soil Atmosphere- air Hydrosphere- water Biosphere- living things Nutrients- needed for survival Macronutrients- phosphorus, nitrogen, and carbon Micronutrients Eutrophication- excess amount of nutrients Biochemical Cycle- movement of matter and energy Resevoir- gathering Flux- movement Residence Time- how long it stays Rocks: Igneous- form volcanoes Sedimentary- layers of mud, dust, and sand Metamorphic- Heat and pressure *Pop. Growth- 1.7% per year *Food production 2.2% per year *War root contributor to Famine-Malnourishment-Obesity 62% Americans over weight 33% Americans obese Protein Deficiancy: Kwashiorkor- re-orange hair and bloated stomach Marasmus- very thin and shriveled CAFOs- concentrated animal feeding operations...
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- Spring '08