Science, asked by pradeep150580, 3 months ago

Oxygen is present in which composition in air. 21% 78% 0.03% 50%

Answers

Answered by arsh273

4

Answer:

21% is the correct answer

Answered by biswashridayraj514

3

Answer:

21%

is your answer

plz mark me as brainliest plz

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