Acid Rain: Acid rain is caused by pollutants like sulfur dioxide combining with water vapor in the atmosphere and falling back to Earth as acidic precipitation.
Air Pollution: Sulfur dioxide is one of the primary pollutants contributing to air pollution, which can have harmful effects on human health and the environment.
Fossil Fuels: The burning of fossil fuels releases sulfur dioxide into the atmosphere, making it an important term related to this key term.