A gas mainly from burning coal and oil that contributes to acid rain and respiratory problems.

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Multiple Choice

A gas mainly from burning coal and oil that contributes to acid rain and respiratory problems.

Explanation:
Sulfur dioxide is released when sulfur in coal and oil is burned. In the atmosphere, SO2 dissolves in water droplets and converts to sulfuric acid, forming sulfate aerosols that fall as acid rain and irritate the respiratory system. While nitrogen oxides also come from combustion and can harm air quality, the specific gas most linked to acid rain from burning coal and oil is sulfur dioxide. VOCs are a different class of emissions tied more to smog formation, and PM2.5 refers to fine particles rather than a gas, though some sulfate-containing particles in PM2.5 originate from SO2.

Sulfur dioxide is released when sulfur in coal and oil is burned. In the atmosphere, SO2 dissolves in water droplets and converts to sulfuric acid, forming sulfate aerosols that fall as acid rain and irritate the respiratory system. While nitrogen oxides also come from combustion and can harm air quality, the specific gas most linked to acid rain from burning coal and oil is sulfur dioxide. VOCs are a different class of emissions tied more to smog formation, and PM2.5 refers to fine particles rather than a gas, though some sulfate-containing particles in PM2.5 originate from SO2.

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