Competition Practice Day 11

For the next 50 days, I will post multiple choice questions for you to answer. I expect you to do them! I will print off your explanations and discuss them with you at the next meeting.

Use the link provided to answer these questions.

MC Practice Day 11

21. What can you find between the mesosphere and thermosphere?
        (A) tropopause

        (B) mesopause

        (C) thermopause

        (D) stratopause

        (E) exopause

22. The atmosphere is mainly composed of which two gases?

        (A) nitrogen and oxygen

        (B) oxygen and water vapor

        (C) nitrogen and water vapor

        (D) oxygen and carbon dioxide

        (E) nitrogen and carbon dioxide

Answer here: http://goo.gl/forms/774u6HB44q