Multiple Choice
Which statement exemplifies the biological pump concept?
A) Autotrophs bring in light photons to synthesize ATP.
B) Bacteria oxidize Fe²⁺ into Fe³⁺, and Archaea reduce Fe³⁺ back into Fe²⁺.
C) Calcium ions are brought into cells while toxic physiological by-products are released.
D) Primary producers sink to the deep ocean, which provides deep ocean organisms with nutrients when the primary producers die.
Correct Answer:
Verified
Correct Answer:
Verified
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