To breath!
it is what we breathe.
plants give us oxygen and take carbondioxide
blood oxygen meters
creates oxygen
oooo?!!?!? You breathe it!!! If there wasn't any oxygen we would all die.
Plants expel oxygen as a byproduct of photosynthesis. This process takes carbon dioxide and breaks it into carbon and oxygen.
adding oxygen
They provide Oxygen and food for us.
use of oxygen increases the energy output of suger burning almost 20 fold
The importance of hemoglobin for erythrocyte function is that it gives them oxygen carrying abilities. Without hemoglobin, the erythrocyte would be unable to carry and transport oxygen where it needs to go.
It keeps the brain and blood supplied with oxygen and nitrogen
to give off oxygen for us to breath.