Burkina Faso represents a nation in which
A) there is a strong middle class, allowing women to marry later, find employment, and have small families.
B) long life spans have produced a large elderly population, supported by good social services.
C) many women are illiterate, marry early and have large families, partly because the infant mortality rate is very high.
D) medical facilities are excellent, and women are having fewer children because infant mortality has dropped dramatically.
C
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In order for a human population to be sustainable, its actual numbers must be ________
A) above its ecological footprint B) below its ecological footprint C) above the carrying capacity D) above its biocapacity E) below the carrying capacity
Which of the following statements concerning the acid-catalyzed hydrolysis of esters is false?
A) High yields of the hydrolysis products are best achieved in the presence of one equivalent of water. B) High yields of the hydrolysis products are best achieved in the presence of a large excess of water. C) High yields of the hydrolysis products are best achieved by removing the water from the equilibrium mixture. D) All three statements are false.
Pumping ancient groundwater faster than it can be replenished _____
a. is impossible b. forms aquicludes c. increases porosity in the intermediate zone d. is called water mining e. is not a problem because of the enormous reserves of ancient groundwater
High-speed winds can cause ________, clouds of sand moving rapidly near the land surface.
A. deflation B. sand storms C. dust devils D. bajadas E. dust clouds