In this experiment, what is the independent variable? A.) The number of worms

B.) The type of worms

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

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 .

High-energy and unstable.