Question

What is smog? How is smog formed? What are its harmful effects?

Answer 1

smog is smoke + fog.
Smog is formed when air pollution get mixed with fog and reduces visibility.
Due to smog many accident happens on road.

Answer 2

Smog is the combination of both smoke and fog. It is formed when they both mix with each other. Harmful effects are it reduces our vision and causes respiratory diseases like Asthma, Heart attack, Damage to nervous system, Skin cancer and Stroke.