A naturally occurring concentration of metallic minerals that can be extracted economically is called ________ whereas any occurrence of useful minerals that are formed in such quantities that eventual extraction is reasonably certain, but not
necessarily profitable, are called ________ resources.
Fill in the blank(s) with correct word
ore; mineral
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Which country holds most of the world's proven coal reserves?
A. The Middle East B. The United States C. Canada D. Mexico E. China
At what age are males more likely to die from AIDS than females?
What will be an ideal response
What was the result of the 1967 Six Day War?
A) the cessation of hostilities between Iran and Iraq B) Israel gained the Gaza Strip, the Golan Heights and the West Bank C) the defeat of Israel at the hands of a multilateral Arab invasion force D) Israel and Egypt signed a peace treaty in which they agreed to joint ownership of the Sinai Peninsula E) Israel was forced to surrender its claim over Jerusalem
The steepest natural angle that loose material can stand at without pieces sliding or rolling downslope is called the _________________
Fill in the blank(s) with correct word