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 a... More »

The air is primarily composed of five gases: nitrogen, oxygen, argon, carbon dioxide and water vapor. In addition to these five gases, there are also trace amounts of several gases, but these make up much less than one p... More »

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 appe... More »

The air is primarily composed of five gases: nitrogen, oxygen, argon, carbon dioxide and water vapor. In addition to these five gases, there are also trace amounts of several gases, but these make up much less than one p... More »

The two most abundant gases in the Earth’s atmosphere are nitrogen and oxygen. The atmosphere contains approximately 78 percent nitrogen and about 21 percent oxygen. The Earth’s atmosphere also contains lesser amounts of... More »

The four main gases in the atmosphere are nitrogen, oxygen, argon and carbon dioxide. However, two of these gases make up most of the atmosphere. They are nitrogen and oxygen, which between them account for over 99 perce... More »

The two main gases found in Earth's atmosphere are nitrogen and oxygen. Nitrogen makes up 78 percent of the atmosphere, and oxygen makes up 21 percent. The remaining 1 percent consists of other gases, such as argon and w... More »