I need help I have to pass to graduate 1. Which atoms in the table above were metals? Select all metals. (Hint: remember that metals are on the left side of the "staircase")
-Li
-Na
-K
-Be
-Mg
-O
-S
-F
-cl
-Br

I don’t know off the top of my head but just look at a periodic table (most elements are metal anyway)

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 .