英语全球变暖.pptx

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1、1.What is global warmingGlobalwarmingisthegradualriseintheEarthstemperaturecausedbyhighlevelsofcarbondioxideandothergasesintheatmosphere.第1页/共17页2.What caused global warminglNaturalcausesGreenhouseeffectlHumanreasonsHumanactivities-emission第2页/共17页Greenhouse effectThe so-called greenhouse effect is

2、short wavesolar radiation through the atmosphere intothe ground,and warming the ground afterthe length of radiation being released in theatmosphere by absorbing carbon dioxide and other substances,thereby creating the effect of atmospheric warming.第3页/共17页Greenhouse effect第4页/共17页 Human activities-e

3、missionBurning natural gas,coal,and oil Electricity generationDeforestation Many factories produce long-lasting industrial gases Population growth第5页/共17页3.Whatre the effects of global warmingEffects on HumansEffects on Wildlife第6页/共17页Global warming is a danger to a humans health.Its affect on clim

4、ate can adversely affect humans.Plagues have been attributed to global warming.An increase in temperature can result in a longer life cycle for diseases.Global warming can affect our future ability to obtain food.As climates change,plants and animals will change,leading to a change in the eating pat

5、terns of humans.Effects on HumansEffects on Humans第7页/共17页Effects on Wildlife Polar BearsPolar BearsRequire pack ice to liveRequire pack ice to liveMight eventually go extinct in the wildMight eventually go extinct in the wildSea turtlesSea turtlesBreed on the same islands asBreed on the same island

6、s astheir birththeir birthCould go extinct on some islandsCould go extinct on some islandsas beaches are floodedas beaches are floodedOther species may go extinct as rainfall patterns change throughout the Other species may go extinct as rainfall patterns change throughout the worldworld第8页/共17页So w

7、e must take effective measures to solve this problemWhat should we do?第9页/共17页4.What should do1.Individual efforts 2.National efforts第10页/共17页First,we should use more clean energy and less coal and oil.Second,we should go to work on foot or by bus instead of driving a car if possible.Third,we should

8、 plant more trees,because plants can turn CO2 into oxygen.More importantly,we should form the habit of saving energy in our daily life.第11页/共17页What should governments do?第12页/共17页First,governments can support research.For example,they should encourage companies to develop vehicles that cause less p

9、ollution.They should also support alternative sources of electricity from wind and water rather than from oil and coal.第13页/共17页Secondly,they should make laws that limit the amount of greenhouse gases that companies can emit.Private companies should be rewarded for following these laws.They should also be punished for creating pollution.第14页/共17页The earth is our home,we have the responsibility to protect it.We must take measures to prevent global warming as eraly as possible.第15页/共17页Thats all,thanks!第16页/共17页感谢您的观看！第17页/共17页