The Earth's atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has its own unique characteristics and plays an important role in the functioning of the atmosphere.

Troposphere

-Lowest layer extending from the surface to ~10 km

-Contains the air we breathe

-Most dynamic atmospheric region

-Weather events (clouds, precipitation, storms, etc.) occur in troposphere

-Temperature decreases with altitude (lapse rate)

Stratosphere

-Extends from ~10 to 50 km above Earth's surface

-Contains the ozone layer

-Ozone layer absorbs harmful ultraviolet (UV) radiation from the sun

-Temperature increases with altitude (in contrast to troposphere)

Thermosphere

-Extends from ~85 km to the edge of space (exosphere)

-Highest atmospheric layer

-Aurora Borealis and Aurora Australis occur in the thermosphere

-Temperature extremely high due to absorption of solar radiation by molecules and atoms

In summary, the troposphere is the lowest and most dynamic layer of the Earth's atmosphere where most weather events occur and temperature decreases with altitude. The stratosphere contains the ozone layer and is characterized by an increase in temperature with altitude. The thermosphere is the highest atmospheric layer and is known for extreme temperature due to absorption of solar radiation.