Which statement is true about this reaction?
19n+7h150
it is a practical source of energy on earth.
it occurs only outside the solar system.
its product is heavier than each of its reactants.
it shows the critical mass of an element.
o

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 .

18

Less stable  hope this