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Uranium-238 decays into thorium-234 and finally into
Longitudinal Study
A research design that involves repeated observations of the same variables over short or long periods of time to detect changes or developments.
Retested
The process of being tested again to verify results or check for changes over time.
Different Ages
Refers to the variety in the chronological ages of individuals within a population, highlighting diversity in stages of life.
Sandwich Generation
A generation of people who care for their aging parents while supporting their own children.
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