Problem: Biodiversity:

Jared Diamond describes an "Evil Quartet" of habitat destruction, overkill, introduced species, and secondary extinctions. Edward O. Wilson prefers the acronym HIPPO, standing for Habitat destruction, Invasive species, Pollution, human over-Population, and Over-harvesting. The most authoritative classification in use today is IUCN's Classification of Direct Threats which has been adopted by major international conservation organizations such as the US Nature Conservancy, the World Wildlife Fund, Conservation International, and BirdLife International.

What is the most invasive classification in use today?
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A: unanswerable

Problem: Appalachian Mountains:

In addition to the true folded mountains, known as the ridge and valley province, the area of dissected plateau to the north and west of the mountains is usually grouped with the Appalachians. This includes the Catskill Mountains of southeastern New York, the Poconos in Pennsylvania, and the Allegheny Plateau of southwestern New York, western Pennsylvania, eastern Ohio and northern West Virginia. This same plateau is known as the Cumberland Plateau in southern West Virginia, eastern Kentucky, western Virginia, eastern Tennessee, and northern Alabama.

Where are the true folded mountains located?
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A: unanswerable

Problem: Tennessee:

In the 2000 presidential election, Vice President Al Gore, a former Democratic U.S. Senator from Tennessee, failed to carry his home state, an unusual occurrence but indicative of strengthening Republican support. Republican George W. Bush received increased support in 2004, with his margin of victory in the state increasing from 4% in 2000 to 14% in 2004. Democratic presidential nominees from Southern states (such as Lyndon B. Johnson, Jimmy Carter, Bill Clinton) usually fare better than their Northern counterparts do in Tennessee, especially among split-ticket voters outside the metropolitan areas.

Which Democratic candidate lost his own state in the 2000 general election?
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A: Al Gore

Problem: Middle Ages:

Society throughout Europe was disturbed by the dislocations caused by the Black Death. Lands that had been marginally productive were abandoned, as the survivors were able to acquire more fertile areas. Although serfdom declined in Western Europe it became more common in Eastern Europe, as landlords imposed it on those of their tenants who had previously been free. Most peasants in Western Europe managed to change the work they had previously owed to their landlords into cash rents. The percentage of serfs amongst the peasantry declined from a high of 90 to closer to 50 per cent by the end of the period. Landlords also became more conscious of common interests with other landholders, and they joined together to extort privileges from their governments. Partly at the urging of landlords, governments attempted to legislate a return to the economic conditions that existed before the Black Death. Non-clergy became increasingly literate, and urban populations began to imitate the nobility's interest in chivalry.

What noble interest did city-dwellers start to mimic in this period?
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A:
chivalry