air pollution
Schlüsselwörter
air pollution,
emission,
coal,
fossil,
industry,
smokestack,
toxic,
power plant,
carbon,
air,
atmosphere,
blue,
chimney,
climate,
cloud,
dirty,
environment,
exhaust,
factory,
fume,
global warming,
industrial,
pollution,
production,
sky,
smog,
smoke,
steam,
white
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