White smoke comes from pipes against blue sky. Problem harmful emissions and air pollution of central heating population of large cities eco concept
Palabras clave
sky,
global,
environmental,
toxic,
warming,
dirty,
engineering,
cloud,
chemistry,
factory,
architecture,
fume,
plant,
equipment,
industry,
contamination,
chemical,
heavy,
gas,
pollution,
vapour,
refinery,
chimney,
energy,
smoke,
petrochemical,
industrial,
fuel,
crude oil,
air,
icon,
business,
manufacturing,
ecology,
pipe,
smog,
emission,
atmosphere,
greenhouse,
effect,
standard,
acid,
rain,
background,
climate,
health,
danger,
environment,
solar
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