Introduction of Chemoautotrophs with its type

    Chemoautotrophs are the bacteria which uses energy evolved from chemical reaction as source of energy . It also uses atmospheric CO2 to prepare food. Chemoautotrophs are of following types

                  I.      Nitrifying bacteria

               II.      Hydrogen bacteria

            III.      Sulphur bacteria

           IV.      Iron bacteria

              V.      Methane bacteria