Based on the Observed Amount of Deuterium in the Universe

question 47

Multiple Choice

Based on the observed amount of deuterium in the universe, we can conclude that

• A) ordinary (baryonic) matter makes 75 percent of the mass of the universe.
• B) neutrons outnumber protons 7 to 1 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 about 4 percent of the critical density.
• E) we live in a critical-density universe.

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Definitions:

Cultural Preferences

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Ineffective Breathing Pattern

A condition characterized by an inadequate or unsatisfactory respiratory process, resulting in insufficient ventilation.

Alveolar-capillary Membrane

The thin tissue layer in the lungs where the exchange of oxygen and carbon dioxide takes place between air spaces and blood.

Pneumonia

A respiratory condition characterized by inflammation of the lungs, usually caused by infection with bacteria, viruses, or other organisms.