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What is the troposphere?
The first layer of atmosphere is called the troposphere. It is the layer next to the surface of the Earth, and the layer where we live. Troposphere means “sphere of change” and is so named because this turbulent zone is full of moving air currents, clouds, storms, and other weather phenomena. Most weather events, including tornadoes and lightning, occur within this layer. Birds, hot air balloons, and most airplanes fly in this layer. However, some planes may fly in the lower stratosphere.