Troposphere.
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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.
no it was made up a long time ago to try and predict the future, but it has 0% accuracy.
While we would find it pretty thin breathing (and poisonous, to boot!) Mars does have an atmosphere, and there IS some oxygen in it.At its densest, Mars's atmosphere is only about 1% the density of Earth's and consists mainly of carbon dioxide (95%) and nitrogen (3%), with trace amounts of water, oxygen, hydrogen peroxide and methane having also been identified.Earth's atmosphere, on the other hand, is mostly nitrogen (78%) and oxygen (21%) with 1% being a mix of hydrogen, carbon dioxide and others.So you can see that Mars has much less atmosphere than the Earth does and oxygen make a proportionally much smaller fraction of of what there is than what we have on Earth.
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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
No. Look here:_____ transports materials within a cell and between cells and makes up ______ percent of most organisms.(1 point)(0 pts)Fat; 60(0 pts)Protein; 40(0 pts)Sugar; 75(1 pt)Water; 50
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.
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
That makes a F, in percent, a 0% or 10%
Up to your neck in ...