Multiple Choice
Most coltan ore is mined in ______________, but purified and marketed in ______________.
A) Congo; developed nations in North America and Europe
B) South Africa; Congo
C) South America; South Africa
D) the United States; Europe
E) Canada; the United States
Correct Answer:

Verified
Correct Answer:
Verified
Q42: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6348/.jpg" alt=" Use the figure
Q43: At _ plate boundaries, tectonic plates
Q44: Tantalum from African coltan is used primarily
Q45: The newest bonanza for recycling scarce and
Q46: Choose the item that best matches each
Q48: The U.S. General Mining Act of 1872,
Q49: Read the following scenario and answer the
Q50: Choose the item that best matches each
Q51: Read the following scenario and answer the
Q52: Read the following scenario and answer the