What happens to electrons in the photoelectric effect? A. They are added to atoms.
B. They are knocked away from atoms.
C. They are turned into light.
D. They are made to orbit faster.

The use of piers and beams to build a strong foundation for a house.

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 .