.............................. is not aprt of repiratory system
(a) nose. (c) diaphragm
(b) oesophagus ( food pipe) (d) lungs
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b) oesophagus ( food pipe)...
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Its B
oesophagus(food pipe) has no role in respiratory system instead it is an important organ for digestive system
oesophagus(food pipe) has no role in respiratory system instead it is an important organ for digestive system
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