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With conscious efforts one can?A. Breathe out air totally without oxygen.B. Breathe in and out by moving diaphragm alone without moving ribs at all.C. Breathe out air through eustachian tube by closing both nose and mouth.D. Empty the lungs completely by breathing out all air out of them. |
Answer» Correct Answer - B With conscious efforts one can breathe in and out by moving diaphragm alone without moving ribs at all. |
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