Troposphere.
0 to 4 percent
Oxygen makes up less than 0.1% of the Moon's composition, mostly bound in rocks and minerals as oxides. There is no significant free oxygen in the Moon's atmosphere.
The percentage of water vapor in the atmosphere varies significantly depending on location and weather conditions, typically ranging from about 0% to 4% by volume. In warm, humid areas, it can reach higher levels, while in cold or dry regions, the concentration is much lower. Overall, water vapor is a crucial component of the Earth's atmosphere, playing a key role in weather and climate.
When you see a list of the components of air, they refer to DRY air, because the amount of water vapor varies. If the relative humidity is 100% and the temperature is 104F, water vapor would make up 7% of that air. I doubt the dew point has ever hit 104F, so almost certainly it's never been that high and is usually a good bit less. When temperatures drop well into the double digits below 0, there is only a barely-detectable amount of water vapor. So those component lists floating around describes dry air, or the make-up of the air that isn't water vapor. Those numbers are fairly constant whereas if you tried to include water vapor, you couldn't come up with hard numbers because they are all displaced by any water vapor in proportion to how much of the dry air they make up.
Scale height is a crucial factor in understanding the composition and properties of an atmosphere. It represents the distance over which the atmospheric pressure decreases by a factor of e (approximately 2.718), and is influenced by the temperature and mass of the atmosphere. A larger scale height indicates a more gradual decrease in pressure with altitude, which can affect the distribution of gases and their interactions within the atmosphere. This information is essential for studying atmospheric dynamics, climate, and the potential habitability of a planet.
You must be fishing for "water vapor". It varies a lot (the 'humidity'),but can be up to (not 'at least') about 4%.All other constituents of normal atmosphere are either much more ormuch less than than 4% .
On average, water vapor makes up about 0.25% of the Earth's atmosphere by mass. However, this percentage can vary depending on temperature and location.
Water vapor typically makes up about 1-4% of the Earth's atmosphere. This amount can vary depending on location, temperature, and other factors.
Water vapor makes up approximately 0.25% to 1% of the Earth's atmosphere. It plays a critical role in the Earth's weather and climate systems as a greenhouse gas.
0 to 4 percent
0 to 4 percent
The element that makes up approximately 0.9 percent of the air is argon. Argon is a noble gas and is the third most abundant gas in the Earth's atmosphere, following nitrogen and oxygen. It plays a minimal role in chemical reactions due to its inert nature.
Water vapor is highly variable, making up just over 0 - 4% of the atmosphere in a given place. Listed below in ever decreasing quantities. Carbon Dioxide, Neon , Helium, Methane, Krypton, Hydrogen, Nitrous Oxide, Carbon Monoxide, Xenon
The Earth's atmosphere is composed of the following gasses:Oxygen (O2) - 21%Nitrogen (N2) - 78%Argon (Ar) - 1%Carbon Dioxide (CO2) - 0.038%Water (H20) - varies from 0 - 4%Neon (Ne) - 0.0018%Helium (He) - 0.000524%Methane (CH4) - 0.0002%Krypton (Kr) - 0.000114%Hydrogen (H2) - 0.00005%Nitrous oxide (N2O) - 0.00005%xenon (Xe) - 0.0000087%Thus, water vapour can make up as much as 4% of the Earth's atmosphere.
Argon is nearly 1% (~.93%) with uniform distribution. Water vapor (water that has been evaporated which converts it from liquid to gas) varies from 0 to 4%, but is on an average of 1%.
Air contains about 20.95% oxygen at sea level.The remainder is 78% nitrogen 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases and particulates, and an average of around 1% water vapor.
None, if the Wkipedia entry is to be believed. See link http://en.wikipedia.org/wiki/Atmosphere#Composition