Bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the vents. they use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. these bacteria are see concept 27.3 (page 579) view available hint(s) bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the vents. they use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. these bacteria are see concept 27.3 (page 579) chemoautotrophs photoautotrophs chemoheterotrophs photoheterotrophs