two minutes
Its carried around your body through ur blood stream
When you breathe it in the oxygen runs around your body and passes through the walls into your blood stream
Because when mammals breathe (Respiratory) it causes their blood to circulate (Circulatory) ad they need their blood to circulate to live. Hope this was helpful. :)
Because by straining your muscles uses up more oxygen out of your blood stream, so you have to breathe harder to get new oxygen in.
The person will die if the blood does not circulate. Blood is necessary to supply food and oxygen to the body.
oxygen blood cells and non-oxygen blood cells
The oxygen poor blood (not enough oxygen) goes to the lungs to get more oxygen to turn into oxygen rich blood (has plenty of oxygen)
Oxygen is in the air, and when you breathe in the oxygen gets into your lungs and is absorbed into the red blood cells.
liver
The oxygen in the air you breathe in is absorbed via the lungs into the blood.
it breathes by its skinnn i am also researchin.. lolz
your diaphram contracts and you inhale the air then the air goes to your lungs where it goes throughout your blood stream then the old oxygen picks up the carbon and then you exhale the oxygen with the carbon