Why is dna important to every living thing

Because it is the instructions for every cell in our body. Without it nothing in our body would know what do to.

DNA is what gives genetic instructions for the development and functions of all living things.

C) electrons encircling a nucleus with neutrons and protons

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 .