Bio notes FEB 24th

Bio notes FEB 24th - Bio notes FEB 24th Mortlity rate-...

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Bio notes FEB 24th Mortlity rate- repro rate Future agr.=new tech with less energy use and more ecological Ecosystem moves slowly over time t a steady rate extracting water in vast amounts. Taking too much groundwater and not keeping up with the population. Only moderate increase in water available per capita. Hydro cycle-dams Carbon cycle-photosynthesis fossil fuels Agriculture- pesticides, monoculture, desertification, salt Material cycle-lithosphere, hydrosphere, atmosphere Agriculture: how it runs Drill on and offshore Pump water to agr. lands Take food that is protected Benefit of rivers have depreciated; so they want to tear down dams Take fossil fuels to dams producing food foosil fuel becomes waste in ocean (nutrient waste-nutrient enrichment ) (no recycling) Groundwater is very imp. To the system If get groundwater back to agr. Fields, could recycle Fresh water systems are going down down down challenge for future Concern for homes near reservoirs-septic tanks TAKE A LOOK AT THE SLIDE: ANTHROPOGENIC WATER SYSTEM
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This note was uploaded on 02/24/2009 for the course BISC 102 taught by Professor Kiefer during the Spring '07 term at USC.

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Bio notes FEB 24th - Bio notes FEB 24th Mortlity rate-...

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