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 .

Chemoautotrophs

Explanation:

Chemoautotrophs can incorporate their own organic molecules from the fixation of carbon dioxide. These life forms can deliver their own source of nourishment, or vitality. The vitality or energy required for this procedure originates from the oxidation of inorganic atoms,. For example, iron, sulfur or magnesium. Chemoautotrophs can flourish in exceptionally brutal situations, for example, remote ocean vents, because of their absence of reliance on outside wellsprings of carbon other than carbon dioxide. Chemoautotrophs incorporate nitrogen fixing microscopic organisms situated in the dirt, iron oxidizing microorganisms situated in the magma beds, and sulfur oxidizing microbes situated in remote ocean warm vents.

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