Examlex
The ____ horizon tends to accumulate mineral ions but relatively little organic matter, and is generally penetrated by mature tree roots?
Fluid Intelligence
Our ability to reason speedily and abstractly; tends to decrease with age, especially during late adulthood.
Cross-Sectional
A research method that involves observations of all of a population, or a representative subset, at one specific point in time.
Education Levels
Education levels are the degrees or stages of formal learning that an individual has completed, ranging from elementary to secondary, and further to tertiary education.
Extended Length
An increase in duration or size beyond the usual or expected amount.
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