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Respiration in Organisms
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10/07/2021 2:10 pm
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Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9 – 12
(ii) 15 – 18
(iii) 21 – 24
(iv) 30 – 33
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10/07/2021 2:11 pm
(ii) 15 – 18