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

Question

Quizplus · Accepted Answer

The biological pump concept refers to the process in which carbon dioxide is removed from the atmosphere and transported to the deep ocean through sinking of organic material produced by primary producers (such as phytoplankton). This organic material provides nutrients for deep ocean organisms when it decomposes. Choice D best exemplifies this concept by stating that primary producers sink to the deep ocean and provide nutrients for deep ocean organisms when they die.

Which Statement Exemplifies the Biological Pump Concept