acid precipation
sulfur
Burning sulfur in oxygen produces sulfur dioxide.
These gases are sulfur dioxide and nitrogen dioxide.
sulfur oxide
These gases are sulfur dioxide and nitrogen dioxide.
Burning of sulfur (or anything else) is a chemical change, not a physical change.
Massive and Immense, due to It's burning of dirty [with sulfur] coal.
Sulfur oxides
It is a chemical change, an oxidation reaction.
By burning coal.
The burning of coal that contains a lot of sulfur.
Volcanoes produce more sulfur dioxide than any other cause. Some sulfur dioxide is also release from the burning of sulfur-rich fossil fuels.