Examlex
The preserved footprint of a Neanderthal is a fossil.
Secondary Research
The analysis and interpretation of existing data or information that was collected by someone else, as opposed to primary research where data is collected firsthand.
Historical Documents
Original records and texts that pertain to past events, serving as evidence or sources of history.
Hypothesis
A proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Variable
An element, feature, or factor that is liable to vary or change; used in statistics and research to measure and analyze differences.
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