How are elements organized in the periodic table

The elements are organized by their atomic number

Elements are arranged from left to right and top to bottom in order of increasing atomic number

What does that mean you dum bum

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 .