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Do now

Do now. What is a reservoir? This is the Quabbin Reservoir, serves Boston with water. Homework. V ocab Words : Quiz on Friday 96. NEPA – National Environmental Policy Act - 97. Global Change Biology 98. TB – Tuberculosis 99. Fish Kills

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Do now

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  1. Do now • What is a reservoir? • This is the Quabbin Reservoir, serves Boston with water.

  2. Homework • Vocab Words: Quiz on Friday 96. NEPA – National Environmental Policy Act - 97. Global Change Biology 98. TB – Tuberculosis 99. Fish Kills 100. Walter Reed – the person, not the Army Hospital • Due next time we meet • Reading - Finish the chapter • What was the issue with Arsenic in the well water on campus?

  3. At your tables, discuss the following topics: • Open your notebooks to show notes from the reading • What is the negative impact of building a dam for hydroelectric power? Pros then cons • Reliable drinking / irrigation water • CO2 emissions much lower • Cheaper electric costs • Flooding controlled • Disrupts natural flooding and stops topsoil rebuilding • Thermal pollution impacts fisheries • Ecotourism impacted • Habitat altered • Sediment build up

  4. New Material • What are some causes of dissolved oxygen decreasing in concentration? • DO experiment • Quick Video on City Water

  5. New Material • Impact of water use in US (Colorado River):

  6. New Material • Impact of water use in Russia Aral Sea:

  7. New Material • Impact of bottled Water: What are the negative aspects of bottle water use: • Plastic does not break down easily & contains BpA • Fills up land fills • Rarely is it recycled – roughly 86% is not • Made from oil – yearly it is estimated at 17 Billion barrels per year to make the bottles • Release of CO2 in creating • Billions in one time revenue

  8. New Material • Remember this slide • Most of this picture contains plastic bottles

  9. Quick review • Explain the purpose of wetlands? • What are the three types of Freshwater wetlands? • What is the Limnetic Zone? • Limnetic Zone - Sunlight penetrates, great deal of life and photosynthesis • What is the Profundal zone? • Profundal zone - Darker (but not pitch black) where sunlight cannot get through. Little plant life here, plants would have to reach up through to the Limnetic Zone to survive • What is the Benthic zone? • Benthic zone - Bottom of the pond / lake. Feels silty from decomposing leaves, sticks,… high nutrient, but low O2

  10. New Material • Other methods of getting water: • Desalination: Can be made from sea water by: • A.) Mimicking of the hydrological cycle – distilling it • B.) Reverse osmosis – force the salt out by going through several membranes to remove the salt.

  11. New Material • Water pollution • Point of Source • Non-point of source • Forms of pollution • Toxic, Sediment, Thermal, Nutrient, pathogen & waterborne diseases • Arsenic Removal and Waste Water Treatment

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