Problem: In ring-porous species, such as ash, black locust, catalpa, chestnut, elm, hickory, mulberry, and oak, the larger vessels or pores (as cross sections of vessels are called) are localised in the part of the growth ring formed in spring, thus forming a region of more or less open and porous tissue. The rest of the ring, produced in summer, is made up of smaller vessels and a much greater proportion of wood fibers. These fibers are the elements which give strength and toughness to wood, while the vessels are a source of weakness.[citation needed]
What fibers does the summer's section of growth-ring have more of?
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Answer: wood fibers

Problem: After August 2008 sites had to be listed on the Open Directory in order to be included. According to Jeff Kaplan of the Internet Archive in November 2010, other sites were still being archived, but more recent captures would become visible only after the next major indexing, an infrequent operation.
Why were sites listed on the Internet Archive after August 2008?
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Answer: unanswerable

Problem: At 36,125 square kilometres (13,948 sq mi), the country is larger in size than Taiwan or Belgium. It lies at a low altitude; its highest point is 300 metres (984 ft). The terrain of is mostly low coastal plain with swamps of Guinean mangroves rising to Guinean forest-savanna mosaic in the east. Its monsoon-like rainy season alternates with periods of hot, dry harmattan winds blowing from the Sahara. The Bijagos Archipelago lies off of the mainland.
Guinea-Bissau is larger than what two countries?
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Answer:
Taiwan or Belgium