2. Two groups of students were tested to compare tehir speed working math problems. Each group was given the same problems. One group used calculators and the other group
computed without calculators.
Independent variable
Dependent variable
Control group
I
Constant(s)

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

365.25 earth days are in the year of a light year