Carbon has an even atomic number, although it is magnetic (unshared electrons). This is best explained by what principle or rule? Aufbau Principle
Pauli's Exclusion Principle
Hund's Rule
Heisenberg Uncertainty Principle
Photoelectric effect

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 should be vaporization 

Its a hope this