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It is simpler because the amount of water vapor in the air can change.
Go to images.google.com and search for gases in the atmosphere.
All the noble gases are in the atmosphere.
It is called "atmosphere". Also, "air".
The main gases in Earth's atmosphere are nitrogen, followed by oxygen.
It is simpler because the amount of water vapor in the air can change.
It is simpler because the amount of water vapor in the air can change.
Go to images.google.com and search for gases in the atmosphere.
Nitrogen (about 78%) and oxygen (about 21%).
line graph
Cirle Graph.
That's because water vapor is so variable in its concentration in the atmosphere.
The atmosphere of the earth is the layers of air that surround the Earth. They contain nitrogen, oxygen, carbon dioxide, water vapor, and small percentages of other gases.
Besides the gases that comprise air, air can also contain variable amounts of water vapor -- characterized by the term, "relative humidity." Because the amount of water vapor held in air can change, it is simpler and more sensible to express component gas percentages on the basis of dry air. Type your answer here...
A pie chart is often the best type of graph to show percentages.
Yes, but usually slowly. At one time there was no Oxygen in the atmosphere, (and quite a bit of methane) and a little less than a billion years ago there was more than 25 % O2 (age of the giant insects ... with lots of plants on land.)
A pie chart is often the best type of graph to show percentages.