Question

% of Oxygen
22). Atmosphere contains approx
20
b. 40
2.2
C. 60
d. 80​

Answer 1

Answer:

approx 21%so u can write 20

Answer 2

Answer:

answer is 20%

Step-by-step explanation:

actually the percentage is 21% but there is no option of 21% show the approximate value is 20 %

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