Which process leads to sulfuric acid deposition?

The process that leads to sulfuric acid deposition primarily involves the combustion of fossil fuels, which releases sulfur dioxide into the atmosphere. When sulfur dioxide is emitted from the burning of fossil fuels, it can react with water, oxygen, and other substances present in the atmosphere to form sulfuric acid (H₂SO₄). This chemical reaction is a significant contributor to acid rain, which negatively affects ecosystems, water bodies, and infrastructure.

In this context, the combustion of fossil fuels is a major anthropogenic source of sulfur dioxide emissions, highlighting a critical link in understanding how human activities can lead to environmental issues like acid deposition. Other sources of sulfur compounds, such as plant respiration and soil erosion, play a lesser role in direct atmospheric contributions compared to fossil fuel combustion. Thus, this process is the most recognized pathway by which sulfuric acid can be deposited, ultimately impacting environmental conditions.