Atmosphere (Earth science)

The Earth's atmosphere is a layer of gases surrounding our planet, essential for life. It is composed mainly of nitrogen (78%) and oxygen (21%), with trace amounts of other gases. The atmosphere protects us from harmful solar radiation, regulates temperature, and enables weather patterns. It has several layers, including the troposphere, where weather occurs, and the stratosphere, which contains the ozone layer. The atmosphere also plays a vital role in the water cycle and carbon cycle, supporting ecosystems and influencing climate. Overall, it is crucial for sustaining life and protecting our planet.