today: 0.04% CO2
21% O2
78% nitrogen
0.01% other
Before: exactly the same.
gasses
Well the gasses help the atmosphere by protecting it also they are in your natural air today
it has almost doubled!
the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.
1000 years ago the air was much the same as it is today, with a little less CO2 and a little less pollution.
It IS possible for hydrogen to be in the atmosphere since we find it there today. Hydrogen is lighter than any other gas, so it of all the gasses in the atmosphere is most readily able to be lost to space. It also combines readily with oxygen to form water, and forms other compounds. However, a small amount of H2 gas does exist in the earth's atmosphere.
Co2 traps heat. therefore the more Co2 in the air the more heat we will collect and build up untill the tempiture gets so unstable that the atmosphere will tear compleatly appart and space will vacume out all gasses on the surface.
Same as today; 79% nitrogen, 20% oxygen, and 1% "everything else", which includes carbon dioxide, various oxides of nitrogen, argon, xenon, radon and assorted other gasses.
All gases we know today
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.