air
atmosphere
background
blue
burning
carbon
chemical
chimney
climate
cloud
co2
coal
contamination
dioxide
ecology
effect
emission
energy
environment
environmental
exhaust
factory
fossil
fuel
fumes
gas
generator
global
greenhouse
heating
industrial
industry
nature
oil
pipe
plant
pollution
power
refinery
sky
smog
smoke
smoke stack
smokestack
steam
tall
tower
toxic
warming
white
定額
Power plant smokestack with carbon emission - co2, dioxide or fossil fuel. Air pollution by industry. Chimney and smoke cloud on blue sky background.の素材 [FY31091597487]
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