Electrons are like that in a wire. If one moves they all have to move. Thus when you turn on a switch an electrical potential difference (created by a generator) immediately causes a force that tries to move the electrons.
Answer:
I believe the answer is: C a bear living in a hollowed-out log.
Because:
The bear is living and the hollowe-out-log isn't.
Using PV=nRT
you get 268.976268L
=270L
in the periodic table, a set of properties repeats from row to row
