Question

Smog is a mixture of smoke and .....
​

Answer 1

Explanation:

Shanghai's smog is a mixture of pollution from coal, the primary source of energy for most homes and businesses in the region, as well as emissions from vehicles. Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog.

Answer 2

Answer:

air.................