Although ________ forms naturally in the stratosphere, when ...

[Sportsfan2111]

Although ________ forms naturally in the stratosphere, when produced near the surface it is considered a pollutant with many negative effects.
 
  A) nitric acid B) ozone C) smog D) sulfur dioxide

Question 2

Maritime tropical (mT) air masses are the most important source of moisture along the Pacific Coast.
 
  Indicate whether the statement is true or false

[randomguy133]

Answer to Question 1

B

Answer to Question 2

FALSE

[Sportsfan2111]

Gracias!

[daiying98]

Thanks for the timely response, appreciate it