What is the mole ratio that can convert from moles of A to moles of B?

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 .

Idon’t know what the answer is i wish i could

The water cycle increase the water content in the earth atmosphere

Answer(2) electrons;