Question

question 4
atmosphere:
where is the coldest region in the atmosphere with respect to degrees c or f?
in the troposphere above antarctica
at 80 miles above the surface
top of the atmosphere
mesopause

Explanation:

The mesopause is the coldest part of the Earth's atmosphere. It is located at the top of the mesosphere, around 80 - 85 kilometers (about 50 - 53 miles) above the surface. Temperatures here can drop to extremely low values due to the lack of heat - retaining gases and the cooling effects of the upper atmosphere's processes.

Answer:

Mesopause