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Which elements make up 97% of the universe? Question 3 options: Hydrogen and oxygen Hydrogen and helium Helium and oxygen Oxygen and iron
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Mar 13, 2021
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Which elements make up 97% of the universe?
Question 3 options:
Hydrogen and oxygen
Hydrogen and helium
Helium and oxygen
Oxygen and iron
Biology
middle-school
Mahesh M
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Answer:
hydrogen and oxygen are the answers olease
Ateiob
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Mar 18, 2021
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Ateiob
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