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Why does exhaled air have a different concentration of carbon dioxide than classroom air or air near a plant?

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Why would exhaled air or air near a fern plant have a different concentration of carbon dioxide than classroom air?

  Air is altered by respiration (in animals) and photosynthesis (in plants).   When humans breathe in classroom air, its contains about 21% oxygen and 0.03% carbon diox

What percentages of the exhaled air are oxygen and carbon dioxide?

Composition of outer or inhaled air: O2 - Oxygen 158 mm Hg (20.9%) CO2 - Carbon dioxide 0.3 mm Hg (0.04%) H2O - Water 5.7 mm Hg (0.75%) N2 - Nitrogen 596 mm Hg (78.4%) Comp

Why does inhaled air contains less carbon dioxide than exhaled air?

When we inhaled, we use the oxygen in the air to send to the organs in our body, in order to stay alive. When all the oxygen stored in a red blood cell is used up, our bodies

What percentages of the exhaled air are carbon dioxide and oxygen?

The air that you exhale is made up of approximately 16% to 17% oxygen and about 4% to 5% carbon dioxide. (inhaled air is about 21% oxygen and only 0.04%, a fractional trace,

How do plants maintain the balance of oxygen and carbon dioxide in the air?

the balance of oxygen and carbon dioxide in the atmosphere is maintained through respiration in plants and animals and by photosynthesis in plants .plants produce oxygen durin

Is carbon dioxide heavier than air?

Carbon dioxide is denser than air.   The density of carbon dioxide is 1,977 g/L at 0 0C and standard  pressure.   The density of air (the so called International Stan

Why is there more carbon dioxide in exhaled air than in inhaled air?

There is more Carbon Dioxide (CO2) when we breathe out because some of the Oxygen (O2) is absorbed into the blood via the lungs, and CO2 is removed from the blood, into the lu