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Agriculture,
and chemicals
and salinity
and water
in the United States
facts and figures
sustainable agriculture
what is Agriculture?
Air Pollution,
acid rain
alternative fuels
and weather
cars create pollution
climate change
facts and figures
in the United States
other pollutants
smog and haze
traveling to reduce pollution
what is air pollution?
wood heaters and open fires
Alternative fuels
Aluminum,
cans
interesting facts
recycling aluminum
what is aluminum?
Appliances,
recycling
steel
Audio-visual equipment, recycling
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