Two groups of students were tested to compare their speed at working math problems. Each groups was given the same problems. One group used calculators and the other group computed with out calculators. What are 2 constants and the control group?

Drag the tiles to the boxes to form correct pairs. match the causes with their effects cause: tectonic plates at transform boundaries experience friction. cause: tectonic plates at transform boundaries experience friction. cause: earth is covered by a crust that runs miles deep.