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In what part of the world did the mutation for lactose tolerance first appear?
Environmental Factors
External elements including climate, ecosystem, and all living and non-living things that affect an individual or population.
Factor Analysis
A statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors.
Statistical Procedure
A method of collecting, analyzing, interpreting, and presenting data in a meaningful way, using mathematical theories and formulas.
Independent Variable
In a scientific experiment, the variable that the researcher modifies or controls to investigate its influence on the dependent variable.
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