Why is it unwise to think that non-prescribed drugs cannot cause harmful side effects?

What are they five steps of cloning?

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.