Answer is: <span>chemosynthesis. </span>Difference between chemosynthesis and photosynthesis is: chemosynthesis is conversion of carbon molecules (CH₄ or CO₂<span>) into organic matter using the </span>oxidation of inorganic compounds (H₂, H₂S, CH₄) as a source of energy, while in photosynthesis organisms to use light energy as a source of energy.
