Within Earth's atmosphere the ozone layer is located: A) in ...

[bobthebuilder]

Within Earth's atmosphere the ozone layer is located:
 
  A) in the troposphere.
  B) between the troposphere and the stratosphere.
  C) in the stratosphere.
  D) between the stratosphere and the mesosphere.
  E) in the mesosphere.

Question 2

What is the percentage of Earth's atmosphere (by volume) that is carbon dioxide (CO2)?
 
  A) 78
  B) 21
  C) 3
  D) 0.9
  E) 0.03

[Tonyam972]

Answer to Question 1

C

Answer to Question 2

E