Unformatted text preview: celled prokaryotes (bacteria). 2 groups of bacteria existed: o Archaebacteria: “ancient bacteria”; rare today; found mostly in hostile environments similar to conditions that resembles the ancient earth o Eubacteria: “true bacteria”; includes most bacteria that cause disease and decay. One type of eubacteria is cyanobacteria, which is able to photosynthesize and release oxygen into the atmosphere....
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- Spring '11
- Biology, true bacteria, Scientists study fossils