Refer to figure.

Troposphere = The lowest layer of our atmosphere.It stars at ground level and extends upward to about 10 km (this altitude differs) above sea level.Nearly all the weather occurs in this layer mainly because 99% of the water vapor is found here.With increasing altitude, the pressure normally drops and the temperature decreases.

Stratosphere = The layer above the troposphere is the stratosphere, it extends from the troposphere to about 50 km above the ground.With increasing altitude, the temperature rises, because of this the air here is very stable and there is almost no turbulence.This is the reason commercial passenger jets fly in the lower stratosphere.The lower boundary of the stratosphere is called the tropopause; the upper boundary is called the stratopause.

Mesosphere = The layer above the stratosphere is the mesosphere, it extends from the stratosphere to about 85 km above the ground.With increasing altitude, the temperature decreases.The air pressure here is very low and the coldest temperatures in the Earth’s atmosphere are found here.

Thermosphere = The layer above the mesosphere is the thermosphere, it extends from the mesosphere to about 600 km.The temperature here can get up to thousands of degrees.

Exosphere = The layer above the thermosphere is the exosphere, it extends from the thermosphere up to 150 000 km above the surface of the earth.However, there is no clear upper boundary where the exosphere fades away into space.

In the case of this specific question: The thickness of the troposphere differs.
It varies with latitude (the angular distance of a place north or south of the earth’s equator) and with season.

• The tropopause can be as high as 20 km (12 miles or 65,000 feet) near the equator
• The tropopause is around 10 km (6.2 miles or about 33,000 feet) above the ground at middle latitudes.
• The tropopause as low as 7 km (4 miles or 23,000 feet) at the poles in winter.