Which crop was one of the first to be domesticated?
A) soybeans B) sorghum C) corn D) rice E) chickpeas
E
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The spiral of cumulative causation in peripheral regions and countries is assisted by
A) import substitution in the core. B) backwash effects from the core. C) spread effects from the core. D) agglomeration diseconomies in the core. E) both C and D
Of the many factors that affect the basil metabolic rate, the MOST important factor is:
A) the person's age. B) the person's sex. C) the person's level of activity. D) the person's body surface area.
Which of the following ecosystems accounts for 35.6% of the world marine fishery?
A) Coastal and coral systems B) Nontropical shelves C) Open ocean D) Tropical shelves E) Upwellings
What the most navigable river system in the world?
A) Columbia B) Colorado C) Mississippi-Missouri D) Great Lakes E) Yukon