It is simpler because the amount of water vapor in the air can change.
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.
A pie chart is often the best type of graph to show percentages.
Small changes in the amount of trace gases, such as carbon dioxide and methane, can have a big impact on the Earth's atmosphere because they act as greenhouse gases. These gases trap heat from the sun in the atmosphere, causing the Earth's temperature to increase. Even slight increases in these gases can lead to significant changes in the Earth's climate, resulting in global warming and its associated effects.
A pie chart is often the best type of graph to show percentages.
The greenhouse effect warms the gases in the atmosphere.
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.
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.
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.
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.
A pie chart with the percentages of nitrogen, oxygen, and other gases in the Earth's atmosphere typically shows nitrogen at around 78%, oxygen at roughly 21%, and other gases like argon, carbon dioxide, and neon making up the remaining 1%. Each segment of the pie chart represents the proportionate amount of each gas 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 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.
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...