| |
| | archaea |
 | | At the same time, the features of archaea generally resemble the features of eukaryotes and bacteria more than they do each other, suggesting that archaea may lie close to the root of the terrestrial tree of life (see life, origin). |
 | | Korarchaeota, in particular, have been singled out as the closest organisms yet found to the universal ancestor. |
 | | It may be that archaea, and other varieties of extremophiles, are commonly the first to colonize young planets and that as time goes by they retreat to those regions, such as hydrothermal vents and subsurface rocks, where primordial environments remain. |
| www.daviddarling.info /encyclopedia/A/archaea.html (421 words) |
|