Need answers to experiment 3 free fall with the title Is that How Fast We're Going?

Ok where is the image ?

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 .

Ireally don’t know this

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;