燃やす
air
atmosphere
carbon
catastrophic
chemical
chimney
climate
clouds
coal
contamination
crisis
damage
destructive
dioxide
ecology
emission
energy
environment
environmental
exhaust
factory
fume
gas
global
greenhouse
harm
heat
impact
industrial
industry
kyoto
ozone
pipe
plant
poison
pollute
polluting
pollution
power
sky
smog
smoke
smokestack
steam
thread
toxic
vapor
warming
waste