What is Found in the Troposphere?

The troposphere is the lowest layer of Earth’s atmosphere, extending from the surface up to about 8-15 kilometers (5-9 miles) high. This layer is where nearly all weather events occur, including clouds, storms, and precipitation. The troposphere contains the majority of the Earth’s air—approximately 75% of the atmosphere’s mass and most of its water vapor. This makes it crucial for sustaining life, as it provides oxygen and carbon dioxide for humans and animals and supports plant life through photosynthesis. Temperature decreases with altitude in the troposphere, and as air rises, it can form various weather phenomena, such as rain or snow.