__________ is the only African country in which Arabic is the official language.
a. Egypt
b. Mauritania
c. Morocco
d. Tunisia
e. Algeria
b. Mauritania
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What was the reason for political conflict between Puerto Rico and the United States concerning the island of Vieques?
A) The island contains a vast array of mineral wealth that could be used to bolster the Puerto Rican economy. B) The island nation of Grenada has established claims to the island. C) The U.S. military has been using the island as a bombing range. D) Cuba has established a military outpost on the island. E) The United States wished to build and exclusive tourist resort and exclude Puerto Ricans.
Which factor determines whether calcite or aragonite will form?
A) temperature B) pressure C) time D) the atoms present
Which of the following best matches the description?Energy that travels through space in the form of waves or particles.
A. radioactive half-life B. light-water reactor C. radiation D. thermal pollution E. nuclear breeder reactor F. decommissioning G. beta radiation H. moderator I. U-235 J. nuclear fusion K. alpha radiation L. transuranic waste M. nuclear fission N. rem O. gamma radiation P. heavy-water reactor
Which of the following is the definition of an essential fatty acid?
A) any fatty acid that the body needs B) any fatty acid that contains more than 14 carbon atoms C) any fatty acid that the body needs, but which it cannot synthesize D) any fatty acid that the body needs and which it must synthesize