Problem: Ogives are alternating wave crests and valleys that appear as dark and light bands of ice on glacier surfaces. They are linked to seasonal motion of glaciers; the width of one dark and one light band generally equals the annual movement of the glacier. Ogives are formed when ice from an icefall is severely broken up, increasing ablation surface area during summer. This creates a swale and space for snow accumulation in the winter, which in turn creates a ridge. Sometimes ogives consist only of undulations or color bands and are described as wave ogives or band ogives.
What do ogives prevent from accumulating?
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Answer: unanswerable

Problem: In 2005, Beyonce teamed up with House of Brands, a shoe company, to produce a range of footwear for House of Dereon. In January 2008, Starwave Mobile launched Beyonce Fashion Diva, a "high-style" mobile game with a social networking component, featuring the House of Dereon collection. In July 2009, Beyonce and her mother launched a new junior apparel label, Sasha Fierce for Dereon, for back-to-school selling. The collection included sportswear, outerwear, handbags, footwear, eyewear, lingerie and jewelry. It was available at department stores including Macy's and Dillard's, and specialty stores Jimmy Jazz and Against All Odds. On May 27, 2010, Beyonce teamed up with clothing store C&A to launch Dereon by Beyonce at their stores in Brazil. The collection included tailored blazers with padded shoulders, little black dresses, embroidered tops and shirts and bandage dresses.
What new idea did Beyonce and her mother launch in 2009?
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Answer: Sasha Fierce for Dereon

Problem: On October 1, 1989, a peaceful demonstration of 10,000 to 15,000 people was violently dispersed by the militia in front of Lviv's Druzhba Stadium, where a concert celebrating the Soviet "reunification" of Ukrainian lands was being held. On October 10, Ivano-Frankivsk was the site of a pre-election protest attended by 30,000 people. On October 15, several thousand people gathered in Chervonohrad, Chernivtsi, Rivne, and Zhytomyr; 500 in Dnipropetrovsk; and 30,000 in Lviv to protest the election law. On October 20, faithful and clergy of the Ukrainian Autocephalous Orthodox Church participated in a synod in Lviv, the first since its forced liquidation in the 1930s.
What was happening in the stadium at the time?
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Answer:
concert