Question

what is the greatest source of carbon that enters the ocean from the atmosphere?
a bicarbonate ions
b carbon dioxide
c glucose
d carbon monoxide

Explanation:

Carbon - dioxide in the atmosphere dissolves in the ocean through gas - exchange at the air - sea interface. Bicarbonate ions are formed within the ocean from carbon - dioxide reactions. Glucose is produced by photosynthesis in the ocean and not a major source of carbon from the atmosphere. Carbon monoxide is present in trace amounts and not a major contributor.

Answer:

B. carbon dioxide