英语演讲PPT-globalwarming.ppt
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1、Global Warming 1.What is global warming?The increase in the average temperature of the earths atmosphere and oceans in recent decades.2.What Lead to Global Warming?Greenhouse Gases:carbon dioxide,methane（甲烷）,nitrous oxide（氧化亚氮）,2.What Lead to Global Warming?Explosive PopulationGrowth 3.What changes
2、does it cause Ice Melting:ice cap,glacier,permafrost 3.What changes does it cause Increased Hurricanes and Other Disastrous Weather 3.What changes does it causeCyclone3.What changes does it causeSea Level Rising:intense storms,beach erosion,land loss,salty sea water intruding into underground water 3.What changes does it cause 4.What should we do Global warming is the greatest environmental challenge in the 21st century.-Albert Gore 4.What should we do Cut-down on our demand for electricity.Decrease the use of cars.Follow the environmental policy:Reduce,Reuse,Recycle.
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