What causes sedimentary rock to change into a metamorphic rock?

Is there going to be another series of nikita? What are Virginia laws about married women who cheat and get pregnant..what are the other mans rights can he terminate his rights and does he have to pay child support since she is married? How many children did Castro have? In 1940 Einstein became a citizen of what country? What does King's College have to do with Henry VIII and the Tudors? How did Pierre trudeau became a Canadian citizen? Who was the minister for Prince Williams wedding? How many countries have signed the Vienna Convention on Diplomatic Relations? What was Kate Middleton's favorite subject? Was Anne Boleyn responsible for Thomas More's execution? What are the positive and negative effects of the Canadian confederation? What kind of person would be considered an ideal citizen under Stalin's totalitarian regime Explain? WHAT is the representation of a government to other foreign governments? What are the official residences of the Queen? Was granting Henry VIII an annulment an action taken by the Catholic Church? Who are queen victorias uncles? Who came after Henry 2? How old was nelson Mandela whan his father died? What are the 2 parts that Britain's local legislature is made of? Does Muammar Gaddafi speak English?