Which of the following are common emissions from fossil fuel combustion?

The correct choice of carbon dioxide and sulfur oxides highlights the common emissions produced during the combustion of fossil fuels. When fossil fuels such as coal, oil, or natural gas are burned for energy, one of the primary products of this chemical reaction is carbon dioxide (CO2), a greenhouse gas that contributes to climate change. Additionally, sulfur oxides (SOx), including sulfur dioxide (SO2), are released when sulfur present in fuels reacts with oxygen during combustion. These sulfur oxides can lead to acid rain and air quality issues, resulting in health hazards and environmental damage.

The emissions listed in the other options do occur during fossil fuel combustion but are not as widely recognized as the primary products compared to carbon dioxide and sulfur oxides. Ozone can form through photochemical reactions in the atmosphere and nitrogen dioxide is primarily produced in high-temperature combustion processes, yet they are more secondary pollutants. Carbon monoxide and water vapor do result from combustion; however, while water vapor is a natural byproduct, carbon monoxide is less significant when discussing typical emissions associated with fossil fuels compared to CO2 and SOx. Lastly, lead and mercury, though potentially released from certain types of industrial fossil fuel combustion, are associated with specific fuel types and are not as prevalent in general