_______ is a combination of industrial emissions, car exhaust, and water vapor that frequently hovers as a yellow-brown haze over many North American cities.

Question

Quizplus · Accepted Answer

Smog is the correct answer because it is specifically a type of air pollution that combines industrial emissions, car exhaust, and water vapor, often creating a yellow-brown haze over cities.

_______ Is a Combination of Industrial Emissions, Car Exhaust, and Water