九上U2T1SD.ppt

Unit 2 Saving the Earth Topic 1Pollution causes too many problems.Section DThere are many kinds of pollution around us,such as They are bad for our health in many ways.be bad for=be harmful toBurning gas,oil and coal createsair pollution.What problems does the pollution cause?It can cause sore eyes and breathing problems.With the increaseWith the increase inin Population Population and and the development ofthe development of industryindustry,litterlitter is is everywhereeverywhere.What What problemsproblems does the pollution does the pollution cause?cause?It It makesmakes our environment our environment dirtydirty.In the fields,farmers use In the fields,farmers use too manytoo manychemicalschemicals which which destroydestroy the soil.the soil.Soil pollutionSoil pollution causes causes unhealthy foodunhealthy food.People People putput lots of litter lots of litter intointo the the landlandIn some cities theres In some cities theres too muchtoo muchnoise pollutionnoise pollution caused bycaused by many many cars.cars.What problems does the pollution cause?Noise pollutionNoise pollution can can makemake people people deafdeaf.Too much noiseToo much noise can cause can cause high blood pressurehigh blood pressure as wellas well.For example,people may For example,people may lose their hearinglose their hearing if they if they work in a work in a noisynoisy place for a long time.place for a long time.The government has done The government has done something useful something useful to stop it.to stop it.Light pollution is harmful to eyes.Working in strong,changeable light for a longtime may cause some kinds of illnesses.It makes people feel terrible and is especiallybad for the eyes.What problems does the light pollution cause?With less pollution,our planet will become greener and our health will be better.Lets be greener people.Read 1a and complete the table below.PollutionEffect on our environment or healthair pollutionlitter soil pollutionnoise pollutionlight pollutionRead 1a and complete the table below.PollutionEffect on our environment or healthair pollutionIt can cause sore eyes and It can cause sore eyes and breathing problems.breathing problems.litter It makes our environment dirty.It makes our environment dirty.soil pollutionIt destroys the soil and causes It destroys the soil and causes unhealthy food.unhealthy food.noise pollutionIt makes people deaf and It makes people deaf and causes high blood pressure.light pollutionIt makes people feel terrible and is bad for the eyes.It may cause some kinds of illnesses.There are many kinds of pollution around us,such as air There are many kinds of pollution around us,such as air pollution,soil pollution,noise pollution,pollution,soil pollution,noise pollution,water pollutionwater pollution ，light pollution and litter.They are bad for our health in many light pollution and litter.They are bad for our health in many ways.ways.With less pollution,our planet will become greener and With less pollution,our planet will become greener and our health will be better.Lets be greener people.our health will be better.Lets be greener people.People use chemicals too much in their fields.It destroys People use chemicals too much in their fields.It destroys the soil and causes unhealthy food.the soil and causes unhealthy food.People pour waste water into rivers and lakes,so water People pour waste water into rivers and lakes,so water pollution is almost everywhere.pollution is almost everywhere.Air pollution causes sore eyes and breathing problems.Air pollution causes sore eyes and breathing problems.Theres too much noise pollution caused by many cars.It Theres too much noise pollution caused by many cars.It makes people deaf and causes high blood pressure.makes people deaf and causes high blood pressure.Light pollution is harmful to our eyes.Light pollution is harmful to our eyes.Litter influences our environment,so people shouldnt Litter influences our environment,so people shouldnt throw it around.throw it around.