What are archaebacteria and why are they sometimes separated into their own kingdom?
Archaebacteria are a diverse group of bacteria (prokaryotes), sometimes called the archaea. The methanogens are anaerobic bacteria that produce methane. Halophiles are bacteria that thrive in high salt concentrations such as those found in salt lakes or pools of sea water. Thermophiles are the heat-loving bacteria found near hydrothermal vents and hot springs.
