VII : Air pollution is cause ..OF... ill health in human begings.In a lot of countries, there are ....LAWS.. limiting the amout of smoke factories can produce although there is not enough......INFORMATION.... on the effects of smoke on the atmosphere.Doctors have ....PROVED..... that air pollution causes.....LUNG..... diseases.The gases from the exhausts of cars......HAVE.... also increased air pollution in most cities.The........LEAD..... of petrol produces poisonous gas, which is often collected in busy streets circled by high buildings. Children........WHO........ in areas when there is a lot of lead in the atmosphere can't think as ......QUICKLY.......... as other children, and are clumsy when the.......USE.......... their hands.