Smog: Smog is a type of severe air pollution characterized by a mixture of fog and smoke or other pollutants. It often occurs in heavily industrialized areas with high levels of vehicle emissions.
Particulate Matter: Particulate matter refers to tiny solid or liquid particles suspended in the air that can be harmful when inhaled. These particles come from sources like dust, smoke, soot, and chemical reactions.
Acid Rain: Acid rain is precipitation (rain, snow) that contains acidic components due to pollutants like sulfur dioxide and nitrogen oxides mixing with water vapor in the atmosphere. It can cause damage to vegetation, buildings, and bodies of water.