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Geography
Watkins
7 August, 18:50
Which gas forms 21% of the Earth's atmosphere?
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Christina
7 August, 22:27
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The atmosphere of the Earth is comprised of different gases. One of which is the most abundant gas in the atmosphere at 79% h is named nitrogen. The second one is the oxygen which is about 21% of the Earths atmosphere. Other trace elements are also present but the amount are not very significant.
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Fernanda Kelley
7 August, 22:40
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The gas that forms 21% of the Earth's atmosphere is oxygen. The Earth's atmosphere is the layer of gases. The most abundant gases in the Earth's atmosphere are nitrogen (78%) and oxygen (21%). The remaining 1% belongs to small amounts of other gases.
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