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When an atom emits a photon, the atom's mass
Estimated
Calculated approximations or predicted values based on statistical models and available data.
Teenagers
Individuals who are in the age group of 13 to 19 years.
Labor-Force Participation
The proportion of individuals within the working-age range who are currently employed or are seeking employment actively.
Prime Working Age
The age range typically considered most productive for work, often defined as between 25 and 54 years old.
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