air pollution frrom chemical valley in Sarnia Ontario Canada bordering Port Huron Michigan USA from oil refineries
Keywords
air,
pollution,
smog,
greenhouse,
gas,
contamination,
contaminated,
fume,
poison,
deadly,
toxic,
smoke,
haze,
cloud,
odour,
lethal,
stench,
acid rain,
ecology,
harmful,
poisonous,
unhealthy,
health,
dangerous,
soot,
carbon dioxide,
effect,
affect,
dirty