{"thcode":2,"term":{"code":56,"name":"archaea","parent":843,"scope":"Microscopic organisms of the domain Archaea living on a diet of hydrogen and carbon dioxide, once thought to be bacteria, and often inhabiting extreme environments, such as thermal vents and hot springs, extremely alkaline and acidic waters, hypersaline water, and anoxic habitats."},"uf":[{"name":"archaebacteria","usewith":false}],"bt":[{"code":843,"name":"organisms","parent":1174,"scope":"Living individuals that grow, reproduce, and die."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":735,"name":"microbiology","parent":650,"scope":"Branch of biology dealing with organisms too small to be seen without the use of a microscope."}]}