Based on current evidence concerning the amount of deuterium in the universe,we can conclude that
A)ordinary (baryonic)matter makes up most of the mass of the universe.
B)neutrons greatly outnumber protons in the universe.
C)most of the deuterium that was created during the era of nucleosynthesis has since been destroyed.
D)the density of ordinary (baryonic)matter is between 1 percent and 10 percent of the critical density.
E)we live in a critical-density universe.

Question

Quizplus · Accepted Answer

The evidence concerning the amount of deuterium in the universe indicates that the density of ordinary (baryonic) matter is between 1 percent and 10 percent of the critical density. This is because the abundance of deuterium depends on the density of baryonic matter, and observations of deuterium in the early universe suggest a low baryonic density.

Based on Current Evidence Concerning the Amount of Deuterium in the Universe,we