Answer: b. troposphere—stratosphere—mesosphere—thermosphere
Explanation:
<em>Troposphere, stratosphere, mesosphere </em>and<em> thermosphere</em> are all layers of Earth's atmosphere.
The lowest part of the atmosphere is troposphere. This is the part we live in. Our weather - rain, snow, clouds, fog - is also found in the troposphere. 75% of all the air in the atmosphere is found in this layer.
Much of the ozone in the atmosphere is located in the stratosphere. The ozone protects us from skin diseases, by absorbing UV radiation.
Above the stratosphere is the mesosphere. The temperature in this layer decreases with height (-90°C is the minimum).
Thermosphere is a layer in which photoionization of molecules takes place due to the ultraviolet radiation. In this way, ions are created in the ionosphere.
