Science, asked by varshnanthu, 1 month ago

3.
% of oxygen is present in the atmosphere.
a. 78
b. 21
c. 7.8
d. 2.1

Answers

Answered by prathapatel1606

2

Answer:

d

Explanation:

i hope this answer help you

Answered by rajibpradhan1977

7

Answer:

21% of oxygen is present in the atmosphere

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