what are three reason why they would do that?
2007-01-27 05:57:32 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Because of fairly recent discoveries that there are bacteria that survive enviornments that we did not think possible before.
We call these bacteria "extremophiles" because they live in very extreme enviornments: extremely hot, extremely salty, and without a source of light for energy . . .these use chemicals like H2S.
BIOLOGY TEACHER
2007-01-27 06:08:43 · answer #1 · answered by CAROL P 4 · 0⤊ 0⤋
I like the domain system better. This puts archaea into it's own group (Domain is above Kingdom; 3 domains: Archea, bacteria/cyanobacteria, and eukaryea). Archaea appear to be more similar to eukaryea and apparently split off much later than bacteria did. This is why it's necessary to classify them differently.
2016-05-24 05:49:12 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The archaebacteria and eubacteria have physical, chemical, and environmental differences that indicate we should separate them. I think the most convincing reason is that the archaebacteria have DNA that is more similar to the DNA of eukaryotes than it is to the DNA of the eubacteria.
2007-01-27 07:04:20 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋