50%
Approximately 21% of the air is oxygen, which we use for breathing. The remaining 78% is nitrogen, which is mainly inert and not used for respiration.
Approximately 10% of the world's population has access to air conditioning. This is due to factors such as economic disparities and geographic location.
About 21% of the air you breathe in is oxygen, which is used by your body to function normally. The rest is made up of mostly nitrogen and trace amounts of other gases.
Alveolar air mixes with air in the anatomic dead space on its way, which is rich in oxygen. hence % of oxygen is more in expired air. Thus though amount of CO2 does not decrease, percentage decreases as inspired air contains very less amount of CO2 (0.03%).
The region with the lowest percentage now married and the highest percentage never married in the U.S. is the Northeast. This region tends to have a higher percentage of individuals who have never been married compared to other regions, and also has a lower percentage of individuals who are currently married.
troposphere
Air temperature can be measured beyond the troposphere.
what place helps determine the churninig air in the troposphere
Air temperature can be measured beyond the troposphere.
warms the air
troposphere
troposphere
troposphere
Troposphere
troposphere
They do.
Troposphere