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The domain Archaea contains several groups. Generally these groups are found in extreme environments such as swamps, salt lakes, and hot springs. The three groups are Methanogens (they have a unique way of getting energy by converting hydrogen gas and carbon dioxide into methane gas), Halophiles (these are "salt-loving" archaea) and then there are the Thermoacidophiles (they live in hot acidic water...ie springs). All three groups of Archaea are pretty tough!

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14y ago

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