燃やす
air
atmosphere
blue
brown
building
burner
catalyst
chemical
chemistry
chimney
climate
cloud
contamination
damage
dioxide
dirty
ecology
emissions
environment
environmental
exhaust
factory
florida
fuel
fumes
gas
global
greenhouse
high
industrial
industry
kyoto
manufacturing
pipe
plant
pollution
power
refinery
rust
sky
smog
smoke
smokestack
stack
steam
tampa
technology
tower
toxic
usa
vapor
warming
waste
white