after continued exposure to air/ the atmosphere

[dorax]

"The Statue of Liberty changed colour after continued exposure to air/ the atmosphere."
Are the two bold phrases correct?

 

[emsr2d2]

It doesn't work with "the atmosphere". That covers an area from the surface of the earth up to 10,000km above the earth! You might consider using "exposure to pollution".

 

[dorax]

I read that its copper exterior reacted with oxygen and turned into green so I guess it isn't due to the pollution. I'll choose the first one.