A student makes a saturated sugar solution by dissolving sugar grains in warm water, stirring, and adding more sugar until it no longer dissolves. The student then allows the solution to come to room temperature. The student pours equal volumes of the sugar solution into five beakers. The student places a string into each of the beakers, with one end of the string hanging free outside of the glassware. The student then places the beakers into five chambers of varying temperature (5, 10, 15, 20, and 25 degrees Celsius). The student allows the beaker and string to sit for two weeks. At the end of the experiment, the student notices crystals have formed in the string. The student masses the amount of crystals that have formed from the sugar solution on the string. Select the dependent variable in this experiment and what process in the rock cycle is the student most likely modeling?