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The atmosphere has a mass of about 5.15 × 10 18 kg, three quarters of which is within about 11 km (6.8 mi; 36,000 ft) of the surface. The atmosphere becomes thinner with increasing altitude, with no definite boundary between the atmosphere and outer space.
23 de sept. de 2023 · Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 , and trace gases.
Looking Back - Atmospheric Composition; Our atmosphere is a dynamic mixture of gases that envelop the Earth. Two gases, nitrogen and oxygen, make up most of the atmosphere by volume. They are indeed important for maintaining life and driving a number of processes near the surface of the Earth.
28 de jul. de 2023 · The atmosphere surrounds the Earth and holds the air we breathe; it protects us from outer space; and holds moisture (clouds), gases, and tiny particles. In short, the atmosphere is the protective bubble in which we live.
Up to about 80 km, the composition of atmosphere is highly uniform; therefore, the term homosphere is applied. The lower atmosphere is composed of two groups of gasses: I. Gases which have minimal effect on weather and climate. Concentration of these gases is constant everywhere throughout the homosphere. By volume:
An atmosphere is made of the layers of gases surrounding a planet or other celestial body. Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in atmospheric layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as ...
Proportions remain the same over time and location. Table 2: Variable Components. Amounts vary over time and location. Although both nitrogen and oxygen are essential to human life on the planet, they have little effect on weather and other atmospheric processes.
