Answer:
These organisms are a part of the kingdom Archaebacteria (otherwise known as just "Archaea")
These organisms are a part of the kingdom Archaebacteria (otherwise known as just "Archaea"), which consists of bacteria. ... This, archaebacteria undergo anaerobic respiration. This is a characteristic that allows such organisms to live in the harsh conditions in which they are found.
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a. large numbers of mitochondria. Because mitochondria is the powerhouse of the cell, responsible in converting food to energy that the body needs.</span>