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Exactly what do you hope to figure out? What is the "what if " question? You should be able to write the research question in a simple sentence.
In fact, keep the whole project simple. This is important to the scientific process: the simpler the experiment, the easier it is to keep "all other conditions" the same and change only one thing.
That's how you can be sure that the thing you are changing is actually causing any difference you measure.