question: what does smog contain?
choices.text: carbon based beings fine dust particles carbon based species vitamins cars microorganisms nutrients Decaying vegetation
choices.label: A B C D E F G H
formatted_question: what does smog contain? (A) carbon based beings (B) fine dust particles (C) carbon based species (D) vitamins (E) cars (F) microorganisms (G) nutrients (H) Decaying vegetation