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