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Why we don't take nitrogen in instead of oxygen

Basit Lone 4th Mar, 2018

Answer (1)

Jasleen Kaur Taneja 5th Mar, 2018

Hi Basit,

Scientifically, our lungs are equipped to take in oxygen only and not nitrogen.

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13th Mar, 2018

But nitrogen is,more in concentration than oxygen .And gases,move,from higher conc.to lower conc.

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Question : What is the correct percentage by volume of various gases in Earth's atmosphere?
Option 1: 20.95% nitrogen, 78.09% oxygen and 0.04% carbon dioxide and other greenhouse gases
Option 2: 10.95% nitrogen, 88.09% oxygen and 0.09% carbon dioxide and other greenhouse gases
Option 3: 10.95% nitrogen, 78.09% oxygen and 0.03% carbon dioxide and other greenhouse gases
Option 4: 78% nitrogen, 21% oxygen and 0.03% carbon dioxide and other greenhouse gases

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