Transcript Pollution and recycling - Sonoma Valley High Home

Pollution and recycling
Pollution types
Mt. Etna Sicily
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Coal power plant
Natural: volcanic eruptions – dust, toxic
gases, ash released
Manmade: waste from manufacturing,
burning fuels, garbage
Air pollution
CH4 + 2O2
CO2+ H2O
Combustion releases
CO2
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21 billion tons a
year
= 4.2 X 1013 pounds
 Effect: world’s
temperature is rising
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Other air pollutants
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NOX compounds +
sunlight creates
smog
Ground-level ozone
makes asthma
worse
Sulfur compounds
make rain pH 4-5
Smog damages
plants, crops
Smog masks in Kuala Lumpur, Malaysia
Water pollution
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1.
2.
3.
4.
Causes:
Industrial waste
Fertilizers
Landfills and
sewage
Industrial
accidents
Great Pacific garbage patch
fertilizers
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Clear Lake, CA
get into waterways
cause algae
blooms
kills fish
Pesticides also
enter the water
cycle from
agriculture
Land
contaminants
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Lead – from fuels
before 1970
Dioxin (used in
making paper) causes
cancer
Each person in the US
throws away 1000 lbs
of garbage a year
Landfills pollute
ground water
Reducing pollution
Cleaner, efficient
cars or carpooling,
mass transit
 Less energy use:
turning off lights,
electronics
 Re-useable bags
for groceries
 Proper disposal of
e-waste, toxics
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Recycling: the final way to prevent
pollution
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Petaluma methane gas to electricity plant at
Landfill site
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Yard waste into mulch
Table scraps into
compost
Plastic bottles become
clothing
Paper recycling could
eliminate 41% of
landfill space
Metal recycling reduces
mining, habitat
destruction
Chose the world you want to live in
Linfan, China
San Francisco, CA