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19_Climate_Change - E VPP 111 Lecture Learning Study...

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EVPP 111 Lecture Learning & Study Guide #19 Spring 2010 Climate Change What is global warming? o an increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes) What do scientists feel have occurred during the past 100s to the earth's average global temperature and sea level? o Temperature and sea level both increased What are the areas of concern, generally, related to global warming and climate change? o human health effects o rising seas levels o disruption of water cycle o changing forests and natural areas o challenges to agriculture and food supply What causes global warming? o several gases in atmosphere transparent to light absorb infrared radiation lead to greenhouse effect o Greenhouse gases What are the characteristics the gases called "greenhouse gases" in terms of their role in global warming? o They trap heat, and they don’t let the light go outside the atmosphere so it ends up warming the earth.
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