Biology, asked by rajeevdwivedirewa, 28 days ago

Q.3. What is the percentage of oxygen in the air?
a)21%.
b) 79%
c) 10%.
d)0.33%

Answers

Answered by daluraj180

0

option a is correct

the percent of oxygen in air is 21%

Answered by snowwhite299

0

Explanation:

option : A (21%)

the percentage of oxygen in the air is 21 % ...

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