Question

most of the annual increase in atmospheric carbon dioxide is due to:
a ozone depletion
b burning of fossil fuels
c both a and b
d none of the above

Explanation:

Ozone depletion is mainly related to the release of chlorofluorocarbons and other substances that affect the ozone - layer. Burning of fossil fuels like coal, oil, and gas releases large amounts of carbon dioxide into the atmosphere, which is the main cause of the annual increase in atmospheric carbon dioxide.

Answer:

B. Burning of fossil fuels