Neither, Nitrogen is 79%, Oxygen is 21% and Carbon dioxide is 0.04%. Carbon dioxide levels have risen from 0.028% at the beginning of the Industrial Revolution, when we began burning fossil fuels (coal, oil and natural gas).
Oxygen---------- 4-5 % Carbon dioxide---------- 20% Nitrogen--------- 75%
Hahaha! No, never. Oxygen is around 19 or 20% of the air, Carbon Dioxide is about 0.00 something percent. It's a small amount but it's enough to cause the greenhouse effect. If it ever did, we'd be long dead/overheated. So, yeah, it never will.
When you inhale air the concentration is abut 21% of oxygen but in your lungs some of it gets consumed and replaced by carbon dioxide the concentration of exhaled oxygen depends on your metabolism and oxygen consumption.
oxygen is 20% of the air you breathe
Dry air is primarily made up of nitrogen (78.09%) and oxygen (20.95%). The remaining 1% is made up of argon (0.93%), carbon dioxide (0.03%) and other trace gases (0.003%). Water vapour (water in its gaseous state) is also present in air in varying amounts.
Approximately 20%. The nitrogen we bresth in remains inert, and is just exhaled, with the carbon dioxide.
I believe it is about 70 percent nitrogen, 10 percent oxygen, and 20 percent carbon dioxide. If anybody knows differently, please correct this.
Oxygen makes up roughly 20% of the atmosphere. Carbon Dioxide makes up 0.035% of the atmosphere.
Oxygen---------- 4-5 % Carbon dioxide---------- 20% Nitrogen--------- 75%
Oxygen gas (when we exhale, we breathe out carbon dioxide).
The air which we are breathing is containing about 20% ofcarbon dioxide which got into our bodies while breathing.
Carbon dioxide is a gas at 20 Celsius. It deposits into a solid at -80 Celsius.
Carbon dioxide is exhaled (whereas 20% oxygen is inhaled, since the vast majority of the remainder of inhaled air is composed of nitrogen, 79%).
Air is composed primarily of 20% oxygen, 79% nitrogen, and 1% carbon dioxide, carbon monoxide, argon, and other trace gasses.
Air is made up of approximately: 78% nitrogen 20% oxygen 0.93% argon 0.04% carbon dioxide and about 1% water vapor which varies with humidity. There are trace amounts of other gasses including helium and radioactive radon gas.
Earth's atmosphere is made up of the following main gases: nitrogen, oxygen, carbon dioxide, and argon. There also are minute amounts of neon, helium, and methane. The atmosphere contains about 78 percent nitrogen, 20 percent oxygen, 0.93 percent argon, and 0.039 percent carbon dioxide..
In these conditions carbon dioxide is a gas.