The temperature inversion is

A. whenever the normal decrease of atmospheric temperature
B. when the decrease in temperature or moisture or both takes place
C. whenever the normal decrease of atmospheric temperature or moisture or both change with height over
D. All of the above
✅ The correct answer is option C.
Temperature inversion, a reversal of the normal behaviour of temperature in the troposphere (the region of the atmosphere nearest the Earth’s surface), in which a layer of cool air at the surface is overlain by a layer of warmer air. (Under normal conditions air temperature usually decreases with height).

The original founders of Common wealth of Independent States, in December 1991, are

A. Tadjikistan, Khirghizia and Turkemenistan
B. Armenia, Georgia and Azerbaijan
C. Russia, Ukraine and Byelorus
D. Moldavia, Khazakhastan and Uzbekistan
✅ The correct answer is option C.
The Commonwealth of Independent States (CIS) had its origins on December 8, 1991, when the elected leaders of Russia, Ukraine, and Belarus (Belorussia) signed an agreement forming a new association to replace the crumbling Union of Soviet Socialist Republics (U.S.S.R.).