maddyjolobot maddyjolobot
  • 19-02-2017
  • Biology
contestada

Which of these is not one of the primary gases found in Earth's atmosphere?
helium
nitrogen
oxygen
carbon dioxide

Respuesta :

worldlyy
worldlyy worldlyy
  • 19-02-2017
The answer is Helium
Answer Link
litaltwizer litaltwizer
  • 19-02-2017
The answer should be helium

Answer Link

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