Match these items.

1 .
sulfur oxide
Largest source of air pollution
2 .
dominion
Main source of particle pollution
3 .
burning fuels
A colorless, odorless, poisonous gas.
4 .
nitrogen oxide
Rule or authority.
5 .
carbon monoxide
A gas produced at high temperatures by combining nitrogen and oxygen.
6 .
hydrocarbons
A gas produced when sulfur impurities in fuel burn by combining with oxygen.
7 .
hydrocarbon
A compound made of hydrogen and carbon
8 .
automobile
Process by which pollutant gases are formed
9 .
power plants
Petroleum is a mixture of these​