Which statement is true of the particles that make up a substance? A. Particles in a solid have more energy than particles in a gas.
B. Particles in a liquid have more energy than particles in a gas.
C. Particles in a gas have more energy than particles in a liquid.
D. Particles in a liquid and particles in a solid have the same amount
of energy
SUBMIT

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 .