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 the seawater. These bacteria are _________.
A. chemoautotrophs
B. chemoheterotrophs
C. photoautotrophs
D. photoheterotrophs
A. chemoautotrophs
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What are the most abundant zooplankton?
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