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Hydrogen and Nitrogen. Or oxygen and carbon dioxide, or carbon monoxide.

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16y ago
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AnswerBot

5mo ago

The two main gases in Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%).

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13y ago
  • hydrogen
  • nitrogen
  • oxygen
  • fluorine
  • chlorine
  • all the noble gasses
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15y ago

Nitrogen and Oxygen

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12y ago

Nitrogen and oxygen

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11y ago

Nitrogen and Oxygen

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7y ago

These gases are nitrogen and oxygen.

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Q: What are the two main gases?
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