Top of Atmosphere

Vertical Composition and Structure of the Atmosphere 

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What is the atmosphere? The atmosphere is a gaseous layer that surrounds Earth and protects it from the vacuum of space. It comprises 78% nitrogen, 21% oxygen, and 1% other gases. The atmosphere has five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere, and the troposphere. Composition of Atmosphere The composition of Earth’s …

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Troposphere

What is the Troposphere?

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The troposphere is the lowest layer of the atmosphere. It extends from Earth’s surface to about 10 kilometers above Earth’s surface. The troposphere is heated by the Sun’s infrared radiation. This layer contains most of the atmosphere’s water vapor, dust, and smoke. Some facts about the troposphere The troposphere is the lowest layer of the …

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