In dry air that does not contain pollution, the predominant gas is nitrogen, which makes up 78 percent of the atmosphere. The next two most voluminous gases are oxygen (21 percent) and argon (1 percent). Other gases appearing in trace amounts include carbon dioxide.Know More
The air naturally contains water vapor as well. The proportion of water vapor in the area varies widely between different areas, depending on the climate.
Human activity has had a significant impact on the gases in the atmosphere, particularly through the burning of fuels and the production of pollutant gases. Burning fossil fuels sends a great deal of carbon dioxide into the atmosphere.
Other gases that enter the atmosphere as pollution include sulfur dioxide, nitrogen oxides and carbon monoxides. When fuels do not burn completely, they send solid particles, as with carbon, directly into the air, causing a dirty film to form on buildings and on the inside of lungs.
Carbon monoxide is one of the most toxic by-products among these pollutants. Inhaling carbon monoxide can lead to death. However, the other pollutants also are caustic to the environment; sulfur dioxide leads to acid rain, which can maim or even kill crops, trees and other plants.Learn more about Atmosphere
The layers of gas that surround the Earth are collectively referred to as the atmosphere. The atmosphere is subdivided into five layers: the troposphere, stratosphere, mesosphere, thermosphere and exosphere. The outermost layer is the exosphere, and the innermost layer is the troposphere.Full Answer >
The Earth's atmosphere is primarily made up of nitrogen, oxygen and argon, but it includes trace gases in smaller amounts such as neon, helium, carbon dioxide, methane, nitrous oxide and ozone. The most abundant gases in the atmosphere are nitrogen at 78 percent and oxygen at 21 percent, while the trace gases methane, neon and helium make up around one-tenth of 1 percent of the atmosphere.Full Answer >
Earth's atmosphere has gone through multiple distinct phases throughout its life, from a hydrogen-rich early period to the modern oxidizing chemistry. The first atmosphere Earth had was chemically very similar to the composition of the primordial dust and gas cloud from which the solar system formed. This chemistry can be seen in some asteroids, and it is a combination of hydrogen, helium and complex organic molecules.Full Answer >
The three main gases found in the Earth's air are nitrogen, oxygen and water vapor. A typical volume of air at sea level at 15 degrees Celsius contains approximately 78 percent nitrogen, 21 percent oxygen and between 1 and 5 percent water vapor.Full Answer >