Material/Constituent elements of air
From AdCiv
Approximate composition of dry atmosphere by volume:
| Element | % vol |
|---|---|
Nitrogen  |
78.08 |
| Oxygen |
20.95 |
| Argon |
0.93 |
| Carbon |
< 0.01 |
| Others |
trace |
Not included in above dry atmosphere: | |
| Water vapour (variable) |
~1% |
Source: NASA
Carbon dioxide updated (to 1998) by IPCC TAR table 6.1 [1]. Figure for carbon extrapolated from this
Edited text from [2]
