Examlex
When gas in a sunspot cools, it does not sink into the solar interior as one would expect of material in an atmosphere.Why?
Darwin's Principles
The fundamental concepts proposed by Charles Darwin, including natural selection and survival of the fittest, explaining biological evolution.
Sequential Study
Study design that combines cross-sectional and longitudinal techniques.
Longitudinal
Pertains to research or studies that observe the same subjects over a period of time, often to detect changes or developments.
Cross-sectional
A research design that looks at data from a population at a single point in time to identify patterns and associations.
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