people+stink+at+ozoning

Human Interference with the water cycle (p.499) 1. What are the three ways humans disrupt the natural water cycle? Withdrawing from Aquifers. By clearing vegetation and building which prevents percolation. We add pollutants to our water and interfere with the natural purification process. 2. What is groundwater mining and what is the danger of this process? When withdrawls from aquifers exceed any possibility of recharge. Because it can limit the amount of freshwater even though it is generally unlimited. 3. Why is it possible to run out of freshwater, a renewable resource? Because the available supply can run off instead of entering bodies of freshwater.

Human Interference with the carbon cycle (p.501) 1. How are humans increasing the amount of carbon dioxide being deposited in the atomosphere on top of "natural" sources? From burning fossil fuel, destruction of forests. 2. What are the greenhouse gases and what are the human causes of these gases? N20 from fertalizers, CH4 bacterial decomposition. 3. Why are these gases called greenhouse gases? They allow solar radiation to ass though but don’t allow heat to escape. 4. What are some possible dangers of global warming? It could cause more water to evaporate and in turn cause more global warming.

Human Interference with the Ozone Shield (p.506) 1. What is the ozone shield and what chemical reaction produces ozone? A layer of zone that absorbs most ultraviolet rays from the sun. 2. What are ozone holes? Severe depletions of the ozone layer 3. Why are ozone holes dangerous to humans? Because it lets more UV rays hit the earth directly causing overheating and also skin cancer. 4. What human pollution destroys ozone molecules? Any cleaning or utensils that contain chlorine atoms. Like refrigerators, cleaning agents, foaming agents Styrofoam cups, egg cartons. 5. What are commons sources of chlorine pollution? Look above

Human Interference and the Arctic (p. 507) 1. What does ANWR stand for and what is it? Arctic National Wildlife Refuge. An oil drilling sight in Alaska that covers 19 million acres. 2. Why is ANWR the source of political debate? Because although it does provide cheaper oil, it destroys our countries earth and its animals. 3. What are the benefits of drilling for oil in ANWR? Reduces our dependence on foreign oil, Provides job opportunities for alaskans, and prvides to buffer against oil price inflation and supply shocks. 4. What are the risks of drilling for oil in ANWR? Killing animals, the eath, the ozone, not finding oil, spending lots of money.