Answer:
The correct answer would be, Layers.
Step-by-step explanation:
The atmosphere is composed of five layers. These layers are as follow:1.
- Troposphere
- Stratosphere
- Mesosphere
- Thermosphere
- Exosphere
Troposphere is the lowest region of atmosphere. It is called the first layer of atmosphere. It is almost 10km above in the atmosphere.
Stratosphere i s the second layer of atmosphere above troposphere. It is almost 50km above in the atmosphere.
Mesosphere is the third layer above stratosphere and it is almost 50 to 80km above the atmosphere.
Thermosphere is the fourth layer and is above Mesosphere.
Exosphere is the fifth layer and is the outermost region of the atmosphere on the planet.