China produces most of the world’s supply of

China produces most of the world’s supply of rare earth metals.  Rare earth metals are found in China, and some other countries and are rare to us. Since they can only be found in certain parts of the world they are produced by the countries that can find and retrieve these earth metals. 

C

Explanation:

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices

elastic potential energy