Select from:
(I) Troposphere.
(II) Stratosphere.
(III) Mesosphere.
(IV) mesopause.
Q: Answer the following question given this paragraph: At the top of the mesosphere is the mesopause. Temperatures here are colder than anywhere else in the atmosphere. They are as low as -100 C (-212 F)! Nowhere on Earth's surface is that cold. Q: What is at the top of the mesosphere? A:
A:
(IV)