What role did observation of carbon dioxide play in this

Last updated: 7/9/2022

What role did observation of carbon dioxide play in this study? a. It acted as a tracer that could help determine the human activities that released mercury into the ocean. b. It showed how mercury is taken up into the marine food web. c. It helped the researchers develop an estimate for deep-water mercury concentration. d. It helped neutralize the toxic effects of mercury.