Final answer:
The Earth's atmosphere is divided into several layers, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
Step-by-step explanation:
The Earth's atmosphere is divided into several layers, each with different characteristics and boundaries.
In order of decreasing altitude, these layers are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The troposphere is the lowest layer and is where weather occurs, while the exosphere is the highest layer and merges into space.