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15 September, 22:08

Which gas makes up 78 percent of Earth's atmosphere?

oxygen

nitrogen

hydrogen

carbon dioxide

inert gases

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Answers (2)
  1. 15 September, 23:10
    0
    Nitrogen is the gas that makes up 78% of Earth's atmosphere. Oxygen makes up 21% of the Earth's atmosphere.
  2. 16 September, 00:15
    0
    the answer is nitrogen it = 78% of earths atmosphere
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