Post Utme Ui 2019 Geography Question 22
Practice objective / multiple choice question 22 from the 2019 Post Utme Ui Geography examination.
The Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases. What is the approximate percentage of oxygen in the Earth's atmosphere?
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About This Question
This is Post Utme Ui 2019 Geography Question 22. It is one of the objective questions from the 2019 Post Utme Ui Geography examination.
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