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
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