All of the following statements about copper are true EXCEPT
A)price increases have spurred the adoption of substitutes.
B)as supplies have decreased we are now mining lower grade ores.
C)recycled copper now accounts for about one-third of copper used in the United States.
D)copper ore is evenly spread around the earth's crust.

Question

Quizplus · Accepted Answer

Copper ore is not evenly spread around the earth's crust. It is found in concentrated deposits and mining operations must be set up in those areas.

All of the Following Statements About Copper Are True EXCEPT