In this experiment, you will determine which of four variables affect the breakdown of rock samples. to do that, you will change one variable at a time and then measure the change in mass of the rock sample. in the space below, write a scientific question you will answer by doing this experiment.

The 13th amendment ended slavery in the united states. what would be the best reason congress decided to amend the constitution to make this practice illegal? a) congress felt all women deserved the right to vote. b) congress felt slavery was ethically and morally wrong. 'c) congress believed everyone should have us citizenship. d) congress believed abraham lincoln should have amended the constitution.