Except near hydrothermal vents, the communities of the oceanic aphotic zone get their energy mainly from
A) photosynthesis by local phytoplankton.
B) photosynthesis by local zooplankton.
C) oxidation of sulfur by sulfur bacteria.
D) organic matter sinking from the photic zone.
Answer: D
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What is the knot of capillaries in the nephron where blood is filtered?
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Indicate whether the statement is true or false
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