If an Isotope Has a Half-Life of 4 Billion Years

question 16

Multiple Choice

If an isotope has a half-life of 4 billion years, then in 4 billion years what will happen?

• A) All of the original amount will have decayed.
• B) A quarter of the original amount will still remain.
• C) Half of the original amount will still be present.
• D) All of the original amount will still be present.
• E) The original amount will have doubled.

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Definitions:

Social Mobility

The ability of individuals or groups to move within the social hierarchy, which can be upward to a higher economic or social class, or downward.

Visible-Minority Immigrants

Immigrants who are identified as being from racial or ethnic groups that are non-majority in the context of a specific country.

Immigration System

encompasses the legal and regulatory framework governing the entry, stay, and status of people in a country other than their own.

Lower-Paying Jobs

Employment positions that offer less financial compensation compared to median or high-paying jobs, often requiring less skill or education.