Some bacteria and archaea use hydrogen sulfide rather than drinking water as being the electron donor in chemosynthesis, a method just like photosynthesis that creates sugars and uses oxygen since the electron acceptor. Sulfur-based chemosynthesis could be simplifiedly compared with photosynthesis: The radioactive 35S is fashioned in cosmic ray spallation https://lukaskifcx.ltfblog.com/27577430/top-infrared-zinc-sulfide-secrets