How does smog develop?
A - The burning of fossil fuels release pollutants that mix with particles in the air
B - It develops as a result of climate change over time
C - Fossil fuels release pollutants into the air whether they are burned or not, creating smog
D - Over-drilling in areas releases chemical pollutants from the ground, creating smog
Answer: A - The burning of fossil fuels release pollutants that mix with particles in the air