What is a primary source of sulfur dioxide emissions?

Burning fossil fuels is the primary source of sulfur dioxide emissions. This process occurs when coal, oil, or natural gas is combusted for energy and transportation, resulting in the release of sulfur dioxide gas into the atmosphere. Fossil fuels often contain sulfur compounds, and when these are burned, sulfur is emitted as a gaseous byproduct. This has significant implications for air quality and contributes to acid rain, which can harm ecosystems, structures, and human health.

Other sources mentioned, such as agricultural burning, volcanic eruptions, and natural gas leaks, can produce sulfur dioxide but are not as significant or widespread as the emissions produced from burning fossil fuels. Agricultural burning does contribute to air pollution, but its focus is more on particulate matter and other gases. Volcanic eruptions can release sulfur dioxide in large amounts during a significant eruption, but this is less frequent and not a continual source compared to fossil fuel combustion. Natural gas leaks primarily release methane, which is a different environmental concern and not a major contributor to sulfur dioxide emissions.