Air is the mixture of various
gases. One of the gases is 21%
Sart of the air and is essential
for the survival of human
beings. Name the gas.
Answers
Answered by
4
Answer:
oxygen contains about 21% of total air composition and very essential for survival of human beings
Answered by
6
oxygen
Explanation:
there is 78 %nitrogen in the atmosphere ,21%oxgen and1%other gases
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