What findings did Henry Hess discover that led him to the theory of sea floor spreading

Hey how did you manage to type such a big lab report

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Where is the following?