Question

Troposphere and stratosphere

Answer 1

Troposphere	Stratosphere
It is the lowest layer of the Earth's atmosphere.	It is the second layer from the surface of the Earth.
It extends up to a height of 8 km at the poles and 18 km at the Equator.	This layer extends up to a height of 50 km from the Earth's surface.
Temperature decreases with increasing height.	At the lower surface, temperature is constant and with increase in height, temperature also increases.
Weather phenomena are witnessed hence, the air is turbulent due to thunderstorms and clouds.	There is absence of dust particles and clouds; therefore, the air is calm, thereby, providing smooth passage to aeroplanes.