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The amount of water vapor in the air changes significantly with location and temperature. so a listing of percentage of gasses in the atmosphere would be different depending on how much water was in the air sampled. That would not be useful, because the other gases in the atmosphere do not change all that much.

So it is more helpful to describe the making of the atmosphere as dry air (containing no moisture) and then adjust if needed for the humidity at any one place and time.

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Why are the amounts or gases in the atmosphere usually shown as percentages of dry air?

Showing the amounts of gases in the atmosphere as percentages of dry air allows for easier comparison and understanding of their relative concentrations. It provides a standardized framework that eliminates the variability that water vapor would introduce, making it simpler to analyze and compare the composition of the atmosphere.


Why are the amounts of gases in the atmosphere usually shown as percentagees?

The amounts of gases in the atmosphere are usually expressed as percentages to provide a clear and easily understandable representation of their relative abundance. Percentages allow for a straightforward comparison between different gases, highlighting their proportions in relation to the total atmospheric composition. This method also simplifies the communication of data, making it accessible to a wide audience, from scientists to the general public.


Why is the amount of gases in the atmosphere usually shown as percentages of dry air?

Showing the amount of gases in the atmosphere as percentages of dry air allows for easy comparison and analysis of the composition of the atmosphere. Since the composition of dry air is relatively stable, expressing the gases as percentages of dry air helps to standardize the data for scientific purposes.


Why are the amount gases in the atmosphere usually shown as percentages of dry air?

Showing gas concentrations as percentages of dry air allows for easier comparison of the relative amounts of different gases in the atmosphere. Dry air is a consistent reference point because its composition is relatively stable, making it a convenient baseline for expressing variations in gas concentrations.


What are the gasses present and their percents?

The composition of gases in the atmosphere is approximately 78% nitrogen, 21% oxygen, and trace amounts of other gases such as carbon dioxide, argon, and water vapor. These percentages can vary slightly depending on location and altitude.


What gases are on Jupiter and the percentages?

Jupiter's atmosphere is primarily composed of hydrogen (around 75%) and helium (around 24%), with trace amounts of other gases such as methane, ammonia, and water vapor. The exact percentages can vary slightly depending on the specific region of the atmosphere being measured.


Why are the amount of gases in the atmosphere usually shown as percentages of dry?

It is simpler because the amount of water vapor in the air can change.


What are the percentages of the two most abundant gases in the atmosphere?

Nitrogen (about 78%) and oxygen (about 21%).


What visual displays would be best for describting the percentages of different gases in the atmosphere?

line graph


Which form of visual display would be best for describing the percentages of different gases in the atmosphere?

Cirle Graph.


What are atmosphere gases?

The atmosphere is composed of gases such as nitrogen (78%), oxygen (21%), argon (0.93%), and trace amounts of carbon dioxide, methane, and other gases. Water vapor is also an important component of the atmosphere.


Why is it hard to include water vapor in a graph that shows the percentages of various gases in the atmosphere?

That's because water vapor is so variable in its concentration in the atmosphere.