What factor has prevented Caribbean countries from reaping the full benefits of their extensive investment in education?
A) drug trafficking
B) the continuing importance of the informal sector
C) brain drain
D) offshore banking and online gambling
E) high levels of illiteracy among Caribbean youth
C) brain drain
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________ advocate for steady-state economies because they believe that Earth's natural systems generally operate in self-renewing cycles that can be "tapped" sustainably
A) Ecological economists B) Socialists C) Capitalists D) Cornucopians E) Malthusians
Carbon dioxide concentrations in soil are ________ than in the atmosphere because ________
A) lower; transpiration B) lower; plant photosynthesis C) higher; ongoing respiration in the ground D) higher; decay of dead plants and animals
Which event is best represented by the hydrograph shown here?
A. a very long period of steady light rain B. a winter snowstorm followed by very cold weather C. a summer thunderstorm D. a long drought with no rain for months
What percentage of Earth's freshwater is accessible in surface rivers and lakes?
A) 70% B) 1% C) 30% D) 10% E) 97%