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as all we humans takes oxygen and releases carbondioxide,how our noe is able to identify that it is oxygen and this is carbondioxide as air consists of many compositions.how is it possible for human nose to identify the oxygen in air and takes only oxygen not other any gases?

Asked by ramya1994 7th February 2011, 6:34 PM
Answered by Expert
Answer:
Dear student,
Our nose takes in air as a whole. However, due to differences in partial pressure and affinity of hemoglobin to blood, it is only oxygen that is absorbed by blood, the remaining gases are exhaled out along with carbon dioxide released from blood to the outside.
Regards, TEam Topperlearning
Answered by Expert 8th February 2011, 4:40 AM
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