It means "not caused or created by humans." That is what it means. That is what
it has always meant and always will mean.
There is naturally occurring carbon dioxide and methane. CO2 and CH4 produced by
humans extracting and burning fossil fuels is not naturally occurring.
In article <TFetN.53954$6ePe.26597@fx42.iad>, lb@cap.con says...
It means "not caused or created by humans." That is what it means. That is what
it has always meant and always will mean.
There is naturally occurring carbon dioxide and methane. CO2 and CH4 produced by
humans extracting and burning fossil fuels is not naturally occurring.
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