Question

only oxygen is come in are body .why?​

Answer 1

Explanation:

because oxygen is needed to burn the fuel [sugars and fatty acids] in our cells to produce energy.) ... (Oxygen is brought into the lungs via breathing, where it is transported by red blood cells to the entire body to be used to produce energy.

Answer 2

Respiration

Explanation:

1. Oxygen is brought into the lungs by means of breathing, where it is moved by red platelets to the whole body to be utilized to create vitality.  
2. Oxygen is the fundamental segment for any breathing gas, at a fractional weight of between generally 0.16 and 1.60 bar at the surrounding pressure. The oxygen is generally the main metabolically dynamic segment except if the gas is a sedative blend.  
3. RBC hemoglobin is available and hemoglobin can just make bond  oxygen so rather than different gasses we can take just oxygen.This air goes into our lungs and everything breaks down in our blood, including the oxygen, nitrogen, argon, carbon dioxide, and whatever else noticeable all around.  
4. The significant single-organ oxygen shoppers are the liver, mind, and heart (expending 20.4%, 18.4%, and 11.6%, separately), while the whole of all the body's skeletal muscles devour about 20%.  some Uses for Oxygen such as.  

1. Humans Breathe Oxygen. Earths well evolved creatures, alongside numerous different species, expect oxygen to endure.  
2. Oxygen for Transportation.
3. Medical Uses of Oxygen.  
4. Oxygen Helps Clean Waste Water.
5. Oxygen as Recreation.
6. Oxygen Is Cool.
7. Oxygen Under Pressure.