SEARCH Articles Figures Tables Autotrophe chemoautotrophe Bacteria nitrifying chemoautotrophs Chemoautotroph Chemoautotroph Chemoautotrophic Chemoautotrophic Chemoautotrophic bacteria Chemoautotrophic organisms Chemoautotrophic theory Chemoautotrophs Chemoautotrophs Nitrification chemoautotrophic process Nitrifying chemoautotrophs The Chemoautotrophic Origin of Life