Question

Why is archaea anaerobic?

Answer 1

Other groups of archaea use sunlight as a source of energy (they are phototrophs), but oxygen–generating photosynthesis does not occur in any of these organisms. ... Some Euryarchaeota are methanogens (archaea that produce methane as a result of metabolism) living in anaerobic environments, such as swamps.

Answer 2

Answer:

Certain Archaea are called thermophiles because they are found in extremely high temperature environments, such as in the hot springs of volcanoes. ... Archaea can survive in both aerobic and anaerobic environments. Aerobic means in the presence of oxygen, while anaerobic means very a very small amount of oxygen available.