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Snail blood is blue due to its containing copper
Snail blood is blue due to its containing copper
Copper ages visibly.
Copper turns buildings green.
Spider blood is blue due to its containing copper
Lobster blood is blue due to its containing copper
the Statue of Liberty was originally a dull copper color, but after 20 years it oxidized and was covered in green petina.
Sterling Silver contains a little copper since pure silver is too soft and would bend.
Copper kills many microbes on contact.