Oxygen's highest level is 100%. Oxygen's lowest level would be 20%.
2
The aorta just as it comes out of your left ventricle.
I would say the air has the highest level of oxygen but it depends how high up you are.
because their is less oxygen up in the mountains
The highest level is level 20.
The highest level is level 20.
The highest level Is 80.
Rivers with waterfalls or rapids will have the highest oxygenation. By contrast, still waters such as placid streams, are prone to de-oxygenation processes such as algae growth.
The level bar, or highest level, is currently at Level 45.
There is no highest level they keep on going forever.So far the highest level is 22
The highest level is moderator Pirate Princess (level 5024)