Answer; C. Live in Antarctic ice Explanation; • Archaebacteria are the oldest living organisms on earth. They are prokaryotes and unicellular. Archaebacteria are found in very harsh conditions such as at the bottom of the sea or in volcanic vents. They slowly gave way to modern organisms when the Earth's conditions settled down and oxygen was introduced to the atmosphere. There are three phyla, or groups, of archaebacteria. methanogens, which harvest energy into methane, halophiles which live in extreme salt conditions and thermoacidophiles which survive in extreme temperature conditions.
