From: John Beckett 

"Geo"  wrote in message
news::
> "Bill Lucy"  wrote in message
> news:MPG.1d6d0056beff39709896a2{at}news.barkto.com...
> Since their appearance, have bacteria evolved?

YES!

Bacteria originally occupied some particular habitat (we don't know what).
Today, different forms of bacteria have evolved that are able to live
nearly frozen, or nearly boiling, or deep (miles) underground, or on
mountain tops, in sewers, in oil, etc.

John

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