Ten thousand years ago, forests covered approximately 50% of Earth. Today, forests cover approximately ________ of the Earth's land area
A) 15% B) 5% C) 30% D) 50% E) 70%
Answer: C
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Sanitary landfills are most likely to result in
A. open dumps. B. the release of methane. C. better ecocities. D. reintroduction of wildlife habitats. E. less urban sprawl.
Inaccuracies in U.S. censuses
A) do not occur with any degree of significance. B) are no big deal—they are just a count of the population, anyway. C) are the result of government mismanagement. D) are a big deal—they affect the distribution of federal revenues and congressional seats. E) are a big deal—they affect the distribution of professional sports franchises around the country.
A population density map of the world shows that the distribution of people is most obviously affected by
A) environmental factors such as natural resources, climate, water availability, topography. B) political factors, types of government, and laws. C) cultural factors such as language, cuisine and religion. D) preferences for places with tropical landscapes. E) economic factors such as development and trade history.
From 395 to 1453 the eastern Christian church was centered at
A. Jerusalem B. Rome C. Constantinople (Istanbul) D. Baghdad