Smog is likely to occur ________
A
Around valleys
B
Near lakes
C
On calm, clear and cool nights
D
Near the industrial areas
Correct Answer: Near the industrial areas
Smog was common in industrial areas, and remains a familiar sight in cities today. Industrial smog typically exists in urban areas where factories burn fossil fuels such as coal, which creates smoke and sulfur dioxide that mix with fog droplets to create a thick blanket of haze close to the ground.