because water is produced during respiration :)!
If it is humid it is saturated. If it is dry it is unsaturated.
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100%
humidity
The temperature at which air becomes saturated and produces dew
Expired air is air that you breathe out of your lungs.
Saturated air is air that has all the water vapor that it can hold.
Saturated air is air that has all the water vapor that it can hold.
Both Inspired and expired air have higher amounts of oxygen than Carbon Dioxide. Inspired air has higher amounts of oxygen than expired, while expired air has higher amounts of Carbon Dioxide than inspired air.
Saturated air is more dense.
When a parcel of air is saturated with water vapor the relative humidity of that parcel of air is 100%.
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When a paracel of air is cooled to the temperature at which it is saturated, it has reached its dew point.
If it is humid it is saturated. If it is dry it is unsaturated.
"Saturated" or "At saturation point".