Identify the contents of the following mixtures. Select all that apply. Each circle is an atom. Different colors are used for different types of atoms. Indicate atoms only for atoms not bound to other atoms. Please remember that the elemental form of some materials is simply the atom itself.

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 .