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Re: Response II

> << Land can (slowly) rise and fall by hundreds of meters due to tectonic
>  processes. The Bering land bridge may have been higher at that time --
>  it was higher than today through much of the Cenozoic, when it
>  to extensive migration between the northern continents. >>
> But there's no evidence that this was the case during
> time.

OOC, what happens if I write "there's no evidence that this was not the case
either"? Are e. g. marine sediments from the relevant parts of Alaska and/or
eastern Siberia known?