• @DoYouNot
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    121 month ago

    Hazarding a guess, but I think it’s referring to something like “the biologically mediated reduction of iron”.

    • Engywuck
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      fedilink
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      81 month ago

      I’d have guessed iron+carbon, instead (so, steel).

      • @lemming741
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        151 month ago

        Lots of carbon = iron
        Little bit of carbon = steel
        Zero carbon = iron

        It’s confusing, I know