 Concentrations of oxygen present in expired air is… mcq given below:
Concentrations of oxygen present in expired air is… mcq given below:
| Q. Concentrations of oxygen present in expired air is…(a) 78.04% / | 
| Do you Agree with Answer comment below | 
 Concentrations of oxygen present in expired air is… mcq given below:
Concentrations of oxygen present in expired air is… mcq given below:
| Q. Concentrations of oxygen present in expired air is…(a) 78.04% / | 
| Do you Agree with Answer comment below |