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Why has it been so difficult to examine the surface of Venus with unmanned probes?
Modern Medicine
The practice of medicine based on the application of scientific knowledge, technology, and research to prevent, diagnose, and treat diseases.
Immigration Rates
The frequency or number of individuals moving into a country or region to live permanently, impacting the demographic composition.
Life Expectancy
Average age to which people in a particular population are expected to live.
Fertility
The natural capability to produce offspring; a measure of reproduction efficiency.
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