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Hello, everyone!Today ,my talking is about haze.Haze is air pollution in which is mixed up with dust, smoke and other dry particles , and it obscure the clarity of the sky and interacts with the natural environment.How is the haze formation? This kind of air pollutant come from a variety of natural and man made sources.Natural sources can include wind blown dust, and soot from wildfires.Man made sources can include motor vehicles, and industrial fuel burning, and manufacturing operations.Haze brought us what harm? First, induce respiratory diseases.Haze composition is very complex, the size of hundreds of particles, these particles through the human body breathing into the respiratory tract, can cause bronchitis, asthma and other respiratory diseases.Second, lead to cardiovascular and cerebrovascular diseases.Fog and haze, low oxygen content in the air, will make the heart beat faster, so that people with chest tightne and shortne of breath.Especially for older people more harm.Third, prone to traffic accidents.Fog and haze weather will reduce visibility, serious can only see a few meters distance.There are great security risks for pedestrians and vehicles on the road, which is very dangerous.And so on.To settle this problem,a series of meaures should be taken as follows.First ,we should strengthen air monitor to lower the levels of small particulate pollutants.Second,we should enact more strict laws and regulations and keep perfecting our current law on environmental protection to regulate people 's daily action and the industrial production and punish those factories that ignore the protection and keep emitting dangerous material that cause haze.Third,we should develop green and energy-saving energy to lower the emiion of haze and improve air quality.
