Troposphere
The Troposphere is the lowest layer of Earth's atmosphere
It extending from the surface up to an average altitude of 12 kilometers (7.5 miles)
It contains approximately 75-80% of the atmosphere's total mass and 99% of its water vapor
Characteristics of Troposphere
Temperature: Decreases with altitude.
Pressure: Decreases with altitude.
Humidity: High, with most atmospheric water vapor.
Weather: Almost all weather phenomena occur here.
