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What percentage do the elements hydrogen and helium account for in the universe? A. 100% B. 99.9% C. 98% D.99.8%

What percentage do the elements hydrogen and helium account for in the universe? A. 100% B. 99.9% C. 98% D.99.8%
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what percentage do the elements hydrogen and helium account for in the universe? A. 100% B. 99.9% C. 98% D.99.8%

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User Oscar Ekstrand
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The percentage is 99.8% so D
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User Glen Robson
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c. 98% this worlds atmostphere is mostly nitrogen tho

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User Alaina
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