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Archaeans may be the only organisms that can live in extreme habitats such as thermal vents or hypersaline water. They may be extremely abundant in environments that are hostile to all other life forms. However, ... An impressive set of links to all things Archaean may be found at Life in Extreme Environments:
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www.ucmp.berkeley.edu/archaea/archaea.html
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Not so inhospitable : It used to be unthinkable that life could exist at temperatures near boiling, but some intrepid archaeans thrive under these conditions. Geysers, like the one shown ... An impressive set of links to all things Archaean may be found at Life in Extreme Environments: Archaea on the Astrobiology Web.
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www.ucmp.berkeley.edu/archaea/archaeafr.html
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Archaea - Wikipedia, the free encyclopedia
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The Archaea [ɑrˈkiə] are a group of single-celled microorganisms. A single individual or species from this domain is called an archaeon (sometimes spelled "archeon"). They have no cell nucleus or ...
en.wikipedia.org/wiki/Archaea
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Microorganism - Wikipedia, the free encyclopedia
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A microorganism (from the Greek: , mikrós , "small" and , organismós , "organism"; also spelled micro organism or micro-organism ) or microbe is an organism that is microscopic (usually to...
en.wikipedia.org/wiki/Microorganism
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The Origin of Life ... In fact, the "age of the oldest preserved rocks on Earth's surface" has been formally proposed as a definition for the base of the Archaean. Most of the oldest rocks are ... columnar, conical, domal and nodular growth forms; during the mild- and late Proterozoic the columnar growth types diversified.
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www.palaeos.com/Archean/Archean.htm
www.palaeos.com/Archean/Archean.htm
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Slowly, over many generations, the simple single-celled life forms, ... Many fossils have been found from this Era, mostly in the form of Bacterial life and Archaean life (Archaeans are physically similar to bacteria, but are biochemically different so much that they are considered a separate from bacteria.
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mediatheek.thinkquest.nl/~ll125/en/life-3.htm
mediatheek.thinkquest.nl/~ll125/en/life-3.htm
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Major radiations of life forms have occurred at other times, too. One of the most extensive diversifications of life occurred in the Ordovician, for example (Miller 1997). ... Allwood, A. C. et al. 2006. Stromatolite reef from the Early Archaean era of Australia. Nature 441: 714-718. See also Awramik, Stanley M. 2006.
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www.talkorigins.org/indexcc/CC/CC300.html
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Astrobiology has highlighted the importance of extremophiles - life forms that love harsh conditions. Scientists now recognize that the realm of habitability for life - "the Goldilocks Zone" - is far larger than once believed.
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science.nasa.gov/newhome/headlines/ast27may99_1.htm
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Biologists have made a startling discovery about the relationship between organisms that most people have never heard of. ... The findings come from the largest ever genetic comparison of higher life forms on the planet. Of 5000 genes examined, researchers identified 123 common genes from all known groups of organisms;
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www.sciencedaily.com/releases/2008/01/080121112642.htm
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