Explain the Earth’s atmosphere
What is the atmosphere made up of?
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The word ‘atmosphere’ means a gaseous cover enveloping a planet. Without the atmosphere life would not have been possible on the Earth: One-fifth of the atmosphere is oxygen and four-fifths is nitrogen. Like the Earth’s interior, the atmosphere too is made up of several layers. All animals and plants live in the lowermost layer of the atmosphere called the ‘troposphere. All-weather phenomena take place in the troposphere. Even airplanes fly on the outer edge of the troposphere. The stratosphere, the mesosphere, the ionosphere, and the exosphere lie above the troposphere.