These microbes have functions and genes that are more similar to Eukaryotes than to Eubacteria. Most organisms in this kingdom are known as extremophiles because they live in extreme conditions. The kingdom Archaebacteria is made up of three different kinds of bacteria, which are Methanogens, Halophiles, and Thermaphiles
MethogensThese bacteria are anaerobic, which means they live in oxygen free environments. For example, marshes, lake sediments, and even digestive tracks are places where these bacteria find a home. They use organic materials and produce methane gas, giving them their name.
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HalophilesThese bacteria live in water with very high concentrations of salinity. They can be found in Utah's Great Salt Lake and The Dead Sea.
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ThermaphilesThese bacteria live in extremely hot areas, mostly hydrothermal vents on the sea floor. They are anaerobic and thrive on acidic sulfur springs. They are also autotrophic producers.
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