In layer 'X' of atmosphere, temperature begins to fall. Layer 'X' is known as cold layer. Thus, layer 'X' is ________.
AMesosphere
BTroposphere
CIonosphere
DStratosphere
In layer 'X' of atmosphere, temperature begins to fall. Layer 'X' is known as cold layer. Thus, layer 'X' is ________.
AMesosphere
BTroposphere
CIonosphere
DStratosphere