1029Every Day ScienceMedium
The coldest region of the Earth’s atmosphere is__________?
AStratopause
BMesopause
CExosphere
DThermosphere
Correct answer
B. Mesopause
Explanation
The top of the mesosphere, called the Mesopause , is the coldest part of Earth’s atmosphere. Temperatures in the upper mesosphere fall as low as −101 °C (172 K; −150 °F), varying according to latitude and season.