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Fixed spelling; improved grammar; tweaked wording to clarify.

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edited Apr 20, 2019 at 2:46

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Sulfur in gasoline turns tointo sulfuric acid, which corroded limestone. I don't know if they still use leaded gasgasoline in France, but tht tunsit turns things black, as do diesel particultesparticulates.

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created Apr 19, 2019 at 19:38

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Sulfur in gasoline turns to sulfuric acid, which corroded limestone. I don't know if they still use leaded gas in France, but tht tuns things black, as do diesel particultes.