Class 11 Biology ch 17 breathing and exchange of gases.

Class 11 Biology ch 17 breathing and exchange of gases.

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Class 11 Biology ch 17 breathing and exchange of gases Breathing:- The process of exchange of oxygen from the atmosphere with carbon dioxide produced by the cells. Advertisement Inspiration:- Oxygen from fresh air taken by the lungs and diffuses into the blood. Expiration:- Co2 given up by venous blood in the lungs is sent out …

Class 11 Biology ch 17 breathing and exchange of gases. Read More »