sabrinalong1920
sabrinalong1920 sabrinalong1920
  • 19-11-2020
  • Biology
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Do you think oxygen turns the penny dark brown all the way through or just on the surface

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hph0713
hph0713 hph0713
  • 19-11-2020

Answer:

just on the surface

Explanation:

you can clean it

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