The early universe was composed mainly of which two elements?
A) Hydrogen and helium
B) Carbon and oxygen
C) Hydrogen and oxygen
D) Carbon and iron

Question

Quizplus · Accepted Answer

The early universe was composed mainly of hydrogen and helium. This is because during the Big Bang, the intense heat and pressure caused the fusion of these two elements, forming the first stars and galaxies. Other elements, such as carbon and oxygen, were later formed through stellar nucleosynthesis in the cores of stars.

The Early Universe Was Composed Mainly of Which Two Elements