Enter the clearance codes from the various quizzes.
|Quiz 1 - The emission spectrum of the Sun|
|Quiz 2 - What happens to sunlight|
|Quiz 3 - The temperature-altitude profile of the atmosphere|
|Quiz 4 - The variation of atmospheric pressure with altitude|
|Quiz 5 - The ozone layer|
|Quiz 6 - Explanation for the variation of temperature with altitude|