Post Utme Al Hikmah University 2018 Geography Question 28
Practice objective / multiple choice question 28 from the 2018 Post Utme Al Hikmah University Geography examination.
The Earth's atmosphere is composed of 78% nitrogen, 21% oxygen, and 1% other gases. What is the percentage of oxygen in the atmosphere?
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About This Question
This is Post Utme Al Hikmah University 2018 Geography Question 28. It is one of the objective questions from the 2018 Post Utme Al Hikmah University Geography examination.
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