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What is the difference between an El Niño and an El Niña?
Experimental Variable(s)
Factors in an experiment that are manipulated or changed by the researcher to investigate their effect on the dependent variable.
Maturation
In experimental design, the problem of individuals changing over time, most obviously by getting older.
Experimental Research
A scientific approach that manipulates one variable to observe its effect on another, within a controlled environment, to establish cause-and-effect relationships.
Change
The process or act of making or becoming different, often considered in the context of personal, organizational, or social evolution.
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