The most common ices in the early solar nebula were:
A)hydrogen and helium.
B)water ice and carbon dioxide.
C)hydrogen, methane, and ammonia.
D)water ice, methane, and ammonia.

Question

Quizplus · Accepted Answer

Water ice, methane, and ammonia are the most common ices in the early solar nebula, based on current scientific understanding. These ices would have formed at the low temperatures and high densities found in the outer regions of the solar nebula, where the gravity of the forming Sun and other protoplanets was weaker. Meanwhile, hydrogen and helium would have been present throughout the entire nebula, but are not considered "ices" in the same sense as water or methane. Carbon dioxide, while present in the solar nebula, would have been less common than water ice and methane based on the temperatures and pressures of the nebula at the time.

The Most Common Ices in the Early Solar Nebula Were