Independent: The second group is not given the drug.
Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.
Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
C, I believe. there's either a double and triple bond between the nitrogenous bases
Probably.. you should ask the people working there if you are allowed tho
