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Air Pollution 101 | National Geographic


air pollution consists of chemicals or

air pollution consists of chemicals or particles in the atmosphere that pose

particles in the atmosphere that pose

particles in the atmosphere that pose serious health and environmental threats

serious health and environmental threats

serious health and environmental threats but what causes air pollution and what

but what causes air pollution and what

but what causes air pollution and what does it mean for our planet some air

does it mean for our planet some air

does it mean for our planet some air pollution comes from natural sources

pollution comes from natural sources

pollution comes from natural sources like volcanic eruptions wildfires or

like volcanic eruptions wildfires or

like volcanic eruptions wildfires or allergens but most air pollution results

allergens but most air pollution results

allergens but most air pollution results from human activities such as energy use

from human activities such as energy use

from human activities such as energy use and agriculture there are different

and agriculture there are different

and agriculture there are different types of human-made air pollution when

types of human-made air pollution when

types of human-made air pollution when we burn fossil fuels to produce energy

we burn fossil fuels to produce energy

we burn fossil fuels to produce energy they release greenhouse gases into the

they release greenhouse gases into the

they release greenhouse gases into the air these emissions such as carbon

air these emissions such as carbon

air these emissions such as carbon dioxide methane nitrous oxide and

dioxide methane nitrous oxide and

dioxide methane nitrous oxide and fluorinated gases trapped heat from the

fluorinated gases trapped heat from the

fluorinated gases trapped heat from the Sun in Earth’s atmosphere leading to a

Sun in Earth’s atmosphere leading to a

Sun in Earth’s atmosphere leading to a rise in global temperatures this creates

rise in global temperatures this creates

rise in global temperatures this creates a cycle where air pollution contributes

a cycle where air pollution contributes

a cycle where air pollution contributes to climate change and climate change

to climate change and climate change

to climate change and climate change creates higher temperatures in turn

creates higher temperatures in turn

creates higher temperatures in turn higher temperatures intensify some types

higher temperatures intensify some types

higher temperatures intensify some types of air pollution for example climate

of air pollution for example climate

of air pollution for example climate change increases smog because it forms

change increases smog because it forms

change increases smog because it forms in the presence of high heat and

in the presence of high heat and

in the presence of high heat and increased levels of ultraviolet

increased levels of ultraviolet

increased levels of ultraviolet radiation more frequent extreme weather

radiation more frequent extreme weather

radiation more frequent extreme weather such as flooding contributes to damp

such as flooding contributes to damp

such as flooding contributes to damp conditions and therefore to arise and

conditions and therefore to arise and

conditions and therefore to arise and mold warmer weather also leads to longer

mold warmer weather also leads to longer

mold warmer weather also leads to longer pollen seasons and therefore more pollen

pollen seasons and therefore more pollen

pollen seasons and therefore more pollen production smog is a type of air

production smog is a type of air

production smog is a type of air pollution that reduces visibility and

pollution that reduces visibility and

pollution that reduces visibility and has serious health effects

has serious health effects

has serious health effects smile can be divided into two categories

smile can be divided into two categories

smile can be divided into two categories sulphurous and photochemical sulfurous

sulphurous and photochemical sulfurous

sulphurous and photochemical sulfurous smog is made up of chemical compounds

smog is made up of chemical compounds

smog is made up of chemical compounds called sulfur oxides it occurs when

called sulfur oxides it occurs when

called sulfur oxides it occurs when burning sulfur bearing fossil fuels such

burning sulfur bearing fossil fuels such

burning sulfur bearing fossil fuels such as coal photochemical smog also called

as coal photochemical smog also called

as coal photochemical smog also called ground-level ozone is a result of the

ground-level ozone is a result of the

ground-level ozone is a result of the reaction between sunlight nitrogen

reaction between sunlight nitrogen

reaction between sunlight nitrogen oxides and volatile organic compounds

oxides and volatile organic compounds

oxides and volatile organic compounds nitrogen oxides come from car exhaust

nitrogen oxides come from car exhaust

nitrogen oxides come from car exhaust coal power plants and factory emissions

coal power plants and factory emissions

coal power plants and factory emissions volatile organic compounds are released

volatile organic compounds are released

volatile organic compounds are released from gasoline paints and many cleaning

from gasoline paints and many cleaning

from gasoline paints and many cleaning solvents smog not only creates a brown

solvents smog not only creates a brown

solvents smog not only creates a brown haze that reduces visibility but also

haze that reduces visibility but also

haze that reduces visibility but also harms plants irritates the eyes and

harms plants irritates the eyes and

harms plants irritates the eyes and causes respiratory distress another

causes respiratory distress another

causes respiratory distress another category of air pollution is toxic

category of air pollution is toxic

category of air pollution is toxic pollutants these are chemicals such as

pollutants these are chemicals such as

pollutants these are chemicals such as mercury lead dioxins and benzene that

mercury lead dioxins and benzene that

mercury lead dioxins and benzene that are released during gas or coal

are released during gas or coal

are released during gas or coal combustion waste incineration or burning

combustion waste incineration or burning

combustion waste incineration or burning of gasoline in addition to adverse

of gasoline in addition to adverse

of gasoline in addition to adverse environmental effects toxic air

environmental effects toxic air

environmental effects toxic air pollution can cause serious health

pollution can cause serious health

pollution can cause serious health problems such as cancer reproductive

problems such as cancer reproductive

problems such as cancer reproductive complications and birth defects while

complications and birth defects while

complications and birth defects while air pollution has many consequences for

air pollution has many consequences for

air pollution has many consequences for our planet there are solutions we can

our planet there are solutions we can

our planet there are solutions we can limit toxic

limit toxic

limit toxic smog and greenhouse gases by decreasing

smog and greenhouse gases by decreasing

smog and greenhouse gases by decreasing the use of fossil fuels such as in

the use of fossil fuels such as in

the use of fossil fuels such as in transportation manufacturing and

transportation manufacturing and

transportation manufacturing and electricity generation reducing air

electricity generation reducing air

electricity generation reducing air pollution not only contributes to a

pollution not only contributes to a

pollution not only contributes to a cleaner environment and better human

cleaner environment and better human

cleaner environment and better human health but can also slow the rate of

health but can also slow the rate of

health but can also slow the rate of global warming

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