Observe the figure given below depicting distribution of some components present in air and answer the following questions.

(a) Identify all the components
(i) 78% = ?
(ii) 21% = ?
(iii) 1% = ?
(b) What purpose is served by component (iii) ?
(c) Do the values or percentages of these components vary
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Observe the figure given below depicting distribution of some components present in air and answer the following questions.

(a) Identify all the components
(i) 78% = ?
(ii) 21% = ?
(iii) 1% = ?
(b) What purpose is served by component (iii) ?
(c) Do the values or percentages of these components vary
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Answer:
78%=nitrogen
21%= oxygen
1% = carbondioxide and other gases
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