Biology
Biology, 20.11.2019 11:31, churchlady114p2met3

9. why it is advised to breathe through the nose only and not through the mouth?
10. what should be the position of our face if we want to use concave mirrors as shaving mirrors. give reason

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9. why it is advised to breathe through the nose only and not through the mouth?
10. what sho...

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