Most of the energy that drives the water cycles comes from which of the following? O The sun
O Earth's core
O Earth's oceans
O The equator

It is c. Earth’s oceans
bc water is necessary to sustaining life on Earth, and helps tie together the Earth's ... The ocean plays a key role in this vital cycle of water.

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 .