The upper part of thermosphere layer is called .............. and extends up to .............Km above sea level .

Most of weather features occur in ............layer , whereas satellite swim through the ...............layer .

The highest temperature layer in the atmosphere is .............. and the lowest temperature one is..............

The region at which the atmospheric envelope is inserted in outer space .

............. is the fourth layer of in atmospheric envelope and it's also called ...........layer , because it's the hottest layer in the atmospheric envelope .

Mesosphere layer is highly rarefied , because it contains limited quantities of .............. and.............gases only .

A charged layer reflects radio waves .

The temperature of thermosphere layer ............. as we go up until it reaches ............'C .