The Irish Examiner Science Quiz

Test your knowledge of science and nature with our tricky multiple choice quiz. Then find out how bright you are. (Answers are at the bottom — but no peeking!

Thu, 09 Jan, 2014 - 00:00

1. Which gas makes up most of every breath you take?

Oxygen; Hydrogen; Nitrogen; Helium

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The Irish Examiner Science Quiz

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