Answer:
Rocks formed at high temperatures and pressures are more easily weathered than rocks formed at low temperatures and pressures.
In an experiment, an independent variable is the one that is controlled in order to measure the effects of the dependent variable. The dependent variable is the one that is being tested or measured.
In this example, the dependent variables would be the flashcards or the underlining, as those are the variables that are going to be measured. <em>The independent variable is the quality of the study.</em>
