Which statement is true regarding dc current?
a. the electrons move back and forth.
b. there can only be one voltage supplied.
c. a high voltage current can be transformed into a low voltage current.
d. a low voltage current can be transformed into a high voltage current.
e. this is what is sent from the power plants to your home.

c, 1a hope this

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.

prndulum needs thread, weight clock to time swings