What Significant Event Occurred 380,000 Years After the Start of the Big

question 11

Multiple Choice

What significant event occurred 380,000 years after the start of the Big Bang?

• A) The production of helium ceased.
• B) All of the galaxies we see today formed.
• C) Quarks became confined in nuclei.
• D) Electrons and nuclei combined to form neutral atoms.

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Definitions:

Incidence Rates

denote the frequency at which new cases of a disease or condition occur in a population over a specified period of time.

Mortality Rates

The measure of the frequency of occurrence of death in a defined population during a specified period.

Seasonal Influenza

An infectious respiratory illness caused by influenza viruses that occur seasonally, typically in the fall and winter.

Age-Specific Mortality Rate

The death rate within a specific age group in a population during a certain time period.