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Which zone within the open-ocean zone is home to the most organisms?
deep zone
surface zone
intertidal zone
transition zone
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GPT-5 mini
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surface zone
Reason: sunlight penetrates the surface (photic) zone, allowing photosynthesis and supporting abundant plankton and thus the highest concentration of marine life in the open ocean.
Reason: sunlight penetrates the surface (photic) zone, allowing photosynthesis and supporting abundant plankton and thus the highest concentration of marine life in the open ocean.
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