The problem: Answer a question about this article:
Terrestrial annelids can be invasive in some situations. In the glaciated areas of North America, for example, almost all native earthworms are thought to have been killed by the glaciers and the worms currently found in those areas are all introduced from other areas, primarily from Europe, and, more recently, from Asia. Northern hardwood forests are especially negatively impacted by invasive worms through the loss of leaf duff, soil fertility, changes in soil chemistry and the loss of ecological diversity. Especially of concern is Amynthas agrestis and at least one state (Wisconsin) has listed it as a prohibited species.
What type of forests can be hurt by invasive worms?
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The answer: Northern hardwood forests

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In the years following the mid-1930s, Detroit was referred to as the "City of Champions" after the Tigers, Lions, and Red Wings captured all three major professional sports championships in a seven-month period of time (the Tigers won the World Series in October 1935; the Lions won the NFL championship in December 1935; the Red Wings won the Stanley Cup in April 1936). In 1932, Eddie "The Midnight Express" Tolan from Detroit won the 100- and 200-meter races and two gold medals at the 1932 Summer Olympics. Joe Louis won the heavyweight championship of the world in 1937.
Who won the boxing title in 1937?
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The answer: Joe Louis

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In South Africa, a "two apex" system existed from 1994 to 2013. The Supreme Court of Appeal (SCA) was created in 1994 and replaced the Appellate Division of the Supreme Court of South Africa as the highest court of appeal in non-constitutional matters. The SCA is subordinate to the Constitutional Court, which is the highest court in matters involving the interpretation and application of the Constitution. But in August 2013 the Constitution was amended to make the Constitutional Court the country's single apex court, superior to the SCA in all matters, both constitutional and non-constitutional.
What court in South Africa has authority over the SCA?
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The answer: the Constitutional Court

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In New York City in 1846, Alexander Turney Stewart established the "Marble Palace" on Broadway, between Chambers and Reade streets. He offered European retail merchandise at fixed prices on a variety of dry goods, and advertised a policy of providing "free entrance" to all potential customers. Though it was clad in white marble to look like a Renaissance palazzo, the building's cast iron construction permitted large plate glass windows that permitted major seasonal displays, especially in the Christmas shopping season. In 1862, Stewart built a new store on a full city block with eight floors and nineteen departments of dress goods and furnishing materials, carpets, glass and china, toys and sports equipment, ranged around a central glass-covered court. His innovations included buying from manufacturers for cash and in large quantities, keeping his markup small and prices low, truthful presentation of merchandise, the one-price policy (so there was no haggling), simple merchandise returns and cash refund policy, selling for cash and not credit, buyers who searched worldwide for quality merchandise, departmentalization, vertical and horizontal integration, volume sales, and free services for customers such as waiting rooms and free delivery of purchases. His innovations were quickly copied by other department stores.
What customer services did the Marble Palace offer?
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The answer:
waiting rooms and free delivery of purchases