AaliyahJordan AaliyahJordan

26-05-2017
Biology

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Scientists believe that the Earth's early atmosphere lacked __________ gas because photosynthetic organisms did not yet exist.

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26-05-2017

carbon dioxide Let me know if you want me to explain.

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Аноним Аноним

26-05-2017

I think it is carbon dioxide. I'm not sure though.

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