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Air PollutionAir Pollution

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Air pollution is theAir pollution is theaddition of gases,addition of gases,

chemicals, and particlechemicals, and particle

matter into thematter into the

atmosphere. Airatmosphere. Airpollutionpollution primarilyprimarily

comes from burningcomes from burning

fossil fuelsfossil fuelssuch assuch as

natural gas, petroleum,natural gas, petroleum,

and coal. A study hasand coal. A study haslisted air pollution aslisted air pollution as

thethe cause of fourcause of four

percent of thepercent of the

deathsdeathsin the Unitedin the UnitedStates.States.

AirAir

PollutionPollution

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AirAir

PollutionPollution

Humans are the mainHumans are the maincause of aircause of air

pollution.pollution.Industry,Industry,

including factories andincluding factories and

power plants, burnpower plants, burn

large quantities of fuel.large quantities of fuel.

Burning coal andBurning coal and

petroleum releasespetroleum releases

sulfur oxides andsulfur oxides and

nitrogen oxide into thenitrogen oxide into theair. Airplanes, boats,air. Airplanes, boats,

and cars burnand cars burn

petroleum, releasingpetroleum, releasing

carbon monoxide andcarbon monoxide and

carbon dioxide.carbon dioxide.

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AirAir

PollutionPollution

he waste in land!llshe waste in land!llsreleases methane.releases methane.Sulfur oxides, carbonSulfur oxides, carbonmonoxide and carbonmonoxide and carbondioxide, and methanedioxide, and methaneall ha"e a "eryall ha"e a "erynegati"e e#ect on airnegati"e e#ect on airquality. hesequality. hese

pollutants can alsopollutants can alsocontribute to thecontribute to thegreenhouse e#ect.greenhouse e#ect.

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Some air pollution is not directly caused byhumans$ for example, animals emit carbondioxide when they breathe, and "olcanoes

release sulfur oxide. %owe"er, most airpollution is lin&ed directly or indirectly tohuman acti"ity. his means that air pollutioncan be best controlled by modifying humanacti"ity to burn a smaller quantity of fossil

AirAir

PollutionPollution

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'hat(s in smog'hat(s in smog

particulatesparticulates

)especially lead*)especially lead*

nitrous oxidesnitrous oxides potassiumpotassium

+arbon monoxide+arbon monoxide

ther toxicther toxicchemicalschemicals

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Sources of Indoor pollutionSources of Indoor pollution

BacteriaBacteria

-iruses-iruses

plantsplants house dusthouse dust itesites

+oc&roaches+oc&roaches pollenpollen

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/#ects on the en"ironment/#ects on the en"ironment

Acid rainAcid rain

0one depletion0one depletion

1lobal warming1lobal warming In humanIn human

population2population2

respiratoryrespiratory

problems, allergies,problems, allergies,

and a ris& forand a ris& for

cancercancer

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op 34 +ountries that /mit the ostop 34 +ountries that /mit the ost

PollutionPollution

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