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Saturday, January 02, 2016

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How pollution has occurred how many years ago?

Erisan Olasheni - Saturday, January 02, 2016
Scientists have discovered that copper pollution of the atmosphere occurred about 2500 years ago. This was discovered by analyzing ice cores from Greenland. The pollution was attributed to the Romans who used copper for military purposes and to produce coins. Hydrofluoric acid will dissolve glass.


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