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16 February, 11:30

1. What is the most abundant element of Earth's atmosphere?

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Answers (2)
  1. 16 February, 15:01
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    Oxygen.

    The atmosphere is composed of ~78% nitrogen and ~21% oxygen, with small amounts of other gases. The bulk composition of the earth by weight is mostly, iron, oxygen, silicon and magnesium
  2. 16 February, 15:17
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    Nitrogen

    Nitrogen makes up about 78% of the Earth's atmosphere. Oxygen makes up another 21% of it. The remaining fraction is composed of argon, carbon dioxide, and water vapor.
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