M5U2+Welcome+to+the+unit(修订).ppt
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1、Welcome to the unitA healthy environment is important for our survival. However,compared with the last few years, the environment is getting worse.An erupting volcanoAn earth-quakeAir pollutionRubbishRubbishAir pollutionAn erupting volcanoAn earth-quakeWhich of these problems are caused by nature an
2、d which are caused by man?RubbishAir pollutionAn erupting volcanoAn earth-quakeVolcano and earthquake are caused by nature, while air pollution and rubbish are caused by man.natural disastersfire volcano earthquake drought typhoonflood hurricane tsunami Can you think of other natural disasters that
3、damage the environment?SandstormGreenhouse effectAcidrainCan you think of other ways in which people damage the environment?cutting trees waterpollution Did you do anything bad for theenvironment in your daily life?What should we do to protect the environment in our daily life?Save water in our dail
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