Final answer:
The aphotic zone in the ocean, located deeper than 200 meters, lacks sunlight necessary for photosynthesis and organisms depend on alternative food sources.
Explanation:
The aphotic zone is the region in the ocean deeper than 200 meters that lacks sufficient sunlight for photosynthesis to occur. Organisms in this zone rely on food drifting down from above or resort to consuming each other.
Learn more about Photosynthesis in different ocean zones here:
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