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PRERNA FOR IAS
THE ATMOSPHERE & ITS LAYERS
1. Atmosphere
The atmosphere is the gaseous envelope surrounding the Earth. It acts as a protective blanket that supports life by providing oxygen, regulating temperature, and shielding the planet from harmful solar radiation. The atmosphere is composed mainly of nitrogen, oxygen, argon, carbon dioxide, and water vapour. It extends hundreds of kilometers above the Earth's surface and is divided into several layers based on temperature variations. The atmosphere plays a crucial role in weather formation, climate regulation, and the water cycle. Without the atmosphere, Earth would
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Learn about Earth's five atmospheric layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Understand temperature variations, pressure changes, and their roles in weather and climate regulation.
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