A mineral is classified as an ore as long as ____.
a. it’s rare and valuable
c. it’s profitable and useful
b. it can be used for jewelry
d. it’s solid and natural
A mineral is classified as an ore as long as it's profitable and useful.
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Asked 8/20/2019 1:32:31 PM
Updated 8/20/2019 4:31:36 PM
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Masamune [8/20/2019 4:31:35 PM], Confirmed by
Masamune [8/20/2019 4:31:36 PM]
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