Answer. Followings are the characteristics of troposphere.
(i) Troposphere is lowest region of the atmosphere.
(ii) It extends from the surface of the Earth up to 12 km.
(iii) In this region temperature decreases from 17°C to -58°C i.e. at the rate of about 6°G per Km.
(iv) The major constituents of troposphere are nitrogen and oxygen gases that constitute 99% by volume of the Earth’s atmosphere.
(v) In this region all weathers occurred almost all aircrafts fly in this region.