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

19-02-2017

The answer is Helium

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litaltwizer litaltwizer

19-02-2017

The answer should be helium

Answer Link

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