Answer:
Emissions of all type.
Step-by-step explanation:
The four major sources of air pollutants are automobiles, industries, stationary sources, refineries, and power plants. Others include agricultural areas. Burning of fossil fuels and other sources like that of ash and dust cause the P.M matter to rise and which inflates the air with sooty particles of heavy elements like lead and hydrocarbons. The commonly found air pollutants are Ozone, Nitrogen, and Sulphur.