Question

The three main types of scientific investigations are descriptive, comparative, and experimental. Which components are

included in all three types of investigations?
a scientific question
an independent variable
a dependent variable
a procedure
a control group
a conclusion

Answer 1

ADF) the person above me is right.

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on exam :)

Step-by-step explanation:

Answer 2

The components included in all three are a scientific question, a procedure, and a conclusion. A scientific question is used to identify the purpose of an experiment, which an investigation can be designed from. A procedure must be present in every experiment so that there is structure to every investigation. Conclusions are always present, because they summarize the results and outcomes of the experiment.