The most abundant substances in the solar nebula are
A) methane and ammonia.
B) water and carbon dioxide.
C) hydrogen and helium.
D) dust grains made of silicon and oxygen.

Question

Quizplus · Accepted Answer

The solar nebula was primarily composed of hydrogen and helium gas. While there were also dust grains present, they were not as abundant as the gas. Other substances such as water, carbon dioxide, methane, and ammonia were present in smaller quantities. Therefore, choice C (hydrogen and helium) is the most accurate answer.

The Most Abundant Substances in the Solar Nebula Are