Air is the mixture of gasses that make up the Earth's atmosphere. Oxygen is about 20% of that mixture.
The Earth's atmosphere is composed of roughly 21% oxygen. This level of oxygen in the air is ideal for human respiratory needs.
Around 16% of the air you breathe out is oxygen. This percentage decreases from the 21% of oxygen in the air you inhale due to the exchange of gases that occurs during respiration.
Oxygen is approximately 21% of the air we breathe.
The oxygen content of air is approximately 21%. Nitrogen is the largest component of air as it takes up 78% of the atmosphere.
The air is primarily composed of nitrogen and oxygen. About 78% Nitrogen, Oxygen 21%.
they both have oxygen
Oxygen changes temperature and it also changes temperature. Example: Humidity causes air to be more moist.
Oxygen is in the air.
No, there is 21% oxygen in air.
in our air is there mostly oxygen
When photosynthiesis occures...it releases oxygen into the air
Dyr air is about 21% oxygen.
There is oxygen,air,and carbon dioxide
Stars twinkle due to the Earth's atmosphere and its turbulence, which causes the light from stars to refract and flicker as it passes through. The twinkling effect is not related to the presence of oxygen specifically, so stars can still appear to twinkle in the absence of oxygen.
Uh...sorry to break it to you, but oxygen is air.
About 21% of inspired air is oxygen.
Room air is about 21% oxygen.