Aerial view of polluted city covered with smog
Schlüsselwörter
smog,
pollution,
fossil,
fuel,
burning,
coal,
aerial,
city,
building,
smoke,
atmosphere,
chemical,
winter,
steam,
dirty,
ecology,
emission,
energy,
greenhouse,
contamination,
industry,
climate,
environmental,
fog,
heat,
vapour,
day,
snow,
sun
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