Examlex
Which of the following would be a positive environmental impact of damming a river?
Observational Study
A research method where the investigator observes subjects and measures variables of interest without assigning treatments to the subjects.
Observational Study
A study where the researcher observes the outcome without manipulating any variables.
Experiment
An organized procedure to study something under controlled conditions.
Confounded
A situation in experimental design where the effects of two variables cannot be separated, leading to ambiguity in results interpretation.
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