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In a non-experimental hypothesis test, a researcher predicts observations or patterns that should be seen in nature if the hypothesis is correct. She or he then collects and analyzes data, seeing whether the patterns are actually present.
Answer:
Any identifiable source of pollution from which pollutants are discharge from a specific location
When we say independent variable, this is the variable in an experiment that is being controlled in order to come up with an answer of a certain problem. In the given scenario above, the independent variable is the sugar consumption. This is the variable that is being controlled in order to know the effects (dependent variable). Hope this helps.