Answer:
water,salt are the house hold items
A compound machine is that which is composed of two or more simple machines. Simple machines come in 6 basic types: (1) wheel and axle, (2) inclined plane, (3) wedge, (4) pulley, (5) screw, and (6) lever. Among the choices given above, the compound machine is the can opener for it is a combination of a wedge and a lever.
They are both made out of atoms!
<span>No uses regarding the human body; it's a noble gas and does not react with anything.</span>
