Oxygen is the invisible gas that constitutes about 1/4 of the (invisible) air that we breathe.
Oxygen is in the air.
No, there is 21% oxygen in air.
in our air is there mostly oxygen
No. Oxygen is an element that typically comes in the form of O2. Air is a mixture of gasses and Oxygen is just one of them. Air is about 21% oxygen and 78% nitrogen with another 1% being a variety of other gasses.
When photosynthiesis occures...it releases oxygen into the air
There is 21% of oxygen in the air.
21% of the air is oxygen
Dyr air is about 21% oxygen.
There is more oxygen in the air.
There is oxygen,air,and carbon dioxide
oxygen percentage in air is 20%
Oxygen and air are not sounds.