One reason Uranus's atmosphere appears almost featureless is that many substances freeze out at its cold temperature. One substance that does NOT freeze out is:
A)ammonia.
B)ammonium hydrosulfide.
C)methane.
D)water.

Question

Quizplus · Accepted Answer

Methane is the one substance listed that does not freeze out at Uranus's cold temperature. Ammonia, ammonium hydrosulfide, and water are known to freeze out and contribute to the lack of distinct features in Uranus's atmosphere.

One Reason Uranus's Atmosphere Appears Almost Featureless Is That Many