Respuesta :

Answer:

There are three classes of Archaea are Methanogens, Halophils and Thermo acidophills

Explanation:

Methanogens : They produce methane gas a waste product of their digestion or process of making energy

Halophiles: They live in salty environments

Thermoacidophilles: They live in hot acidic terrestrial environments.They are Crenarchaeota belonging to the Acidilobales and the Sulfolobales.