What is the hardest mineral?
What will be an ideal response?
diamond
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The philosophy of classical economics developed by Adam Smith ________
A) assures equality between rich and poor B) advocates free-market policies that many credit for the tremendous gains in material prosperity of industrial nations C) proposes maintenance of economies through government restraint and regulation D) was adopted by the Aborigines in the Kakadu region of Australia E) argues that individuals acting in their own self-interest harm society
What proportion of urban Americans lives in central cities?
A. one-tenth B. one-quarter C. one-third D. one-half E. two-thirds
Urban runoff is an example of a type of ________ ________ pollution
Fill in the blank(s) with correct word
Which country is Africa's leading trade partner?
a. the United States b. Russia c. India d. China e. Germany