Which of the following metals is the most expensive per troy ounce.
(40 points)
written by Charles • topics: elements block unblock • metals economics block unblock
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China is the most populus country in the world, making up 19.8% of the world's total population. About how many more people live in China than India? (40 points)
written by Charles • topics: geography block unblock • population block unblock
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