The Middle East and North Africa contain 7% of the global population but hold roughly what percent of the world's proven oil reserves?
A) 5%
B) 15%
C) 50%
D) 25%
E) 85%
C) 50%
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The infant mortality rate is the percentage of children who die before the age of ________
A) 1 year B) 5 years C) 1 month D) 6 months E) 2 years
The rising global demand for food has recently been met by ________
A) an increase in per-acre crop yields B) switching to a diet high in fish and seafood, which do not require cropland C) cultivating more land D) decreasing the per-capita amount of food available
Active mountain belts are most likely to be found ________.
A) in the interior regions of continents B) along the margins of continents C) along only the eastern margins of continents D) scattered throughout continents
Where are neurotransmitters stored in a nerve cell?
A) the axon B) a dendrite C) the synapse D) the vesicle