Answer:
Today, currency is a mixture of coins and paper money. But it wasn't always that way. People used a lot of unusual things for money before they had metal coins and paper bills (don't start a sentence with before). For example, in one part of the world, people used (get rid of a ) sharks' teeth for money. In some places, brightly colored feathers and rare seashells were money. People in one area even used the hair from elephants' tails for money.