GEO 131 Lecture 18: Lecture 18 - Climate Change
12 Jan 2017
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Similar format to midterm: mp, sa and a question that involves a diagram ***rock cycle, c cycle, n cycle, food chain, food web. A longer question that makes you integrate course and concepts. But think the magnitude of change is insignificant. The global avg temp increase may be 2-3 c but some places have huge increase and some places don"t. But they"re not clear abt what the greenhouse effect is. Many people confused abt the diff between the greenhouse effect and stratospheric ozone depletion. The hole in the ozone layer nothing to do with climate change. Greenhouse effect: more co2, ch4 and water vapour trap heat. Aware that not everyone agrees that there is a climate-change problem. This degree of uncertainty makes denial a little easier. Past climate change happened over an extended period of time, whereas current climate change is happening rapidly.
