Which of the following is a source of photochemical smog.

A. Fossil fuels
B. Wind energy
C. Biomass fuels
D. Nuclear energy
Is the answer A?

Yes. You're right again.

Yes, but fossil fuel emissions are not the only ingredient.

okkkkkkk so A?

What are all the answers to the Unit Test?

Yes, the answer is A. Fossil fuels are indeed a significant source of photochemical smog. Photochemical smog is formed when sunlight interacts with certain pollutants, such as nitrogen oxides (NOx) and volatile organic compounds (VOCs), which are often produced from the burning of fossil fuels, such as coal, gasoline, and diesel.

To arrive at this answer, you can eliminate options B, C, and D because wind energy, biomass fuels, and nuclear energy do not directly emit the pollutants that contribute to photochemical smog. Fossil fuels, on the other hand, are known to release pollutants that can undergo chemical reactions in the presence of sunlight, leading to the formation of photochemical smog.

Now I'm not trying to be mean but unit test should be done on your own.

(Sorry this message is a very very late reply).

on god!!!!!!!!!!!!!! thank you R.I.P.