How does the carbon locked in shells of marine organisms move back to the atmosphere? A through subduction of deposits and volcanism

B through the process of respiration in these organisms

C through death and decomposition

D through the microbial process of ammonification

E through chemical reactions in acidifying oceans

Carbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.

The carbon cycle refers to the movement of carbon through the biogeochemical cycle. The carbon cycle cuts across;

Carbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.

Learn more about the carbon cycle: link

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).