| http://www.w3.org/ns/prov#value | - Jeddy, I think most methanogens can subsist on atmospheric CO2 (but I am no biologist), it is the hydrogen that looks to be limiting as in the article:Methanogens typically thrive in environments in which all electron acceptors other than CO2 (such as oxygen, nitrate, trivalent iron, and sulfate) have been depleted.
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