In sunny cities such as Los Angeles, the ever-rising automobile ...

[bclement10]

In sunny cities such as Los Angeles, the ever-rising automobile population and the large petroleum processing plants generate ___________________ _smog, which irritates the eyes.
  Fill in the blank with correct word.

Question 2

Due to increased industrialization, by the 1850s, London had become notorious for its pea soup fog, which was a thick mixture of ___________________ _.
  Fill in the blank with correct word.

[kkenney]

Answer to Question 1

ANSWER: photochemical

Answer to Question 2

ANSWER: smoke and fog
fog and smoke

[bclement10]

Thanks for the timely response, appreciate it

[amandalm]

YES! Correct, THANKS for helping me on my review