if you closely examine a wood screw, you will see that the threads on it from a long wrapped around a cylinder.

a) wedge
b) pulley
c) inclined plane
d) wheel and axle

ill do it for 100, also this isnt 80 its 40

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.