Select all that apply. the weight of an object: changes slightly with location on the earth decreases with height above sea level does not change from planet to planet

1) changes slightly with location on the earth
2) decreases with height above sea level

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 correct answer is "hydrogen".