As compared to Photosynthesis, the Chemosynthesis involves CO2 fixation using energy derived from __:
Some organisms are able to convert inorganic material into organic compounds by a process called Chemosynthesis. This involves oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis.
This question is a part of GKToday's Integrated IAS General Studies Module