Arrange the objects from smallest to largest. * The thickness of the rings around Saturn
11 The diameter of Earth's moon
* The diameter of the orbit of Jupiter

Iwould google this

Ithink d hope that

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 .

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this