nataliepfaff12 nataliepfaff12
  • 26-04-2021
  • Biology
contestada

How much oxygen does the
atmosphere contain?
O 12%
0 76%
O 35%
0 26%

Respuesta :

euniquereni
euniquereni euniquereni
  • 26-04-2021

Answer:

20.95%

Explanation:

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.

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