Problem: Mammal:

Molecular studies based on DNA analysis have suggested new relationships among mammal families over the last few years. Most of these findings have been independently validated by retrotransposon presence/absence data. Classification systems based on molecular studies reveal three major groups or lineages of placental mammals- Afrotheria, Xenarthra, and Boreoeutheria- which diverged from early common ancestors in the Cretaceous. The relationships between these three lineages is contentious, and all three possible different hypotheses have been proposed with respect to which group is basal with respect to other placentals. These hypotheses are Atlantogenata (basal Boreoeutheria), Epitheria (basal Xenarthra), and Exafroplacentalia (basal Afrotheria). Boreoeutheria in turn contains two major lineages- Euarchontoglires and Laurasiatheria.

During these Molecular studies, which three major groups of mammals shared a common ancestors from the Cretaceous period?
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A: Afrotheria, Xenarthra, and Boreoeutheria

Problem: Due to the work nature of airline pilots, who often cross several timezones and regions of sunlight and darkness in one day, and spend many hours awake both day and night, they are often unable to maintain sleep patterns that correspond to the natural human circadian rhythm; this situation can easily lead to fatigue. The NTSB cites this as contributing to many accidents[unreliable medical source?] and has conducted several research studies in order to find methods of combating fatigue in pilots.
What organizations cites this disruption of sleep patterns as a cause of accidents?
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Answer: NTSB

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Lord Mayor's official residence is 3 Elliot Terrace, located on the Hoe. Once a home of Waldorf and Nancy Astor, it was given by Lady Astor to the City of Plymouth as an official residence for future Lord Mayors and is also used today for civic hospitality, as lodgings for visiting dignitaries and High Court judges and it is also available to hire for private events. The Civic Centre municipal office building in Armada Way became a listed building in June 2007 because of its quality and period features, but has become the centre of a controversy as the council planned for its demolition estimating that it could cost 40m to refurbish it, resulting in possible job losses.
What did Plymouth council estimate the cost to refurbish the Civic Centre municipal office building to be?
A: 40m

Context and question: The chapter house was built concurrently with the east parts of the abbey under Henry III, between about 1245 and 1253. It was restored by Sir George Gilbert Scott in 1872. The entrance is approached from the east cloister walk and includes a double doorway with a large tympanum above.
Under whom wasn't the chapter house built?
Answer: unanswerable

Question: Most mutations within genes are neutral, having no effect on the organism's phenotype (silent mutations). Some mutations do not change the amino acid sequence because multiple codons encode the same amino acid (synonymous mutations). Other mutations can be neutral if they lead to amino acid sequence changes, but the protein still functions similarly with the new amino acid (e.g. conservative mutations). Many mutations, however, are deleterious or even lethal, and are removed from populations by natural selection. Genetic disorders are the result of deleterious mutations and can be due to spontaneous mutation in the affected individual, or can be inherited. Finally, a small fraction of mutations are beneficial, improving the organism's fitness and are extremely important for evolution, since their directional selection leads to adaptive evolution.:7.6
Is there an answer to this question: What does the directional selection of beneficial mutations lead to?

Answer: adaptive evolution

Question: Church and state are officially separated since 1916 in Uruguay. The religion with most followers in Montevideo is Roman Catholicism and has been so since the foundation of the city. The Roman Catholic Archdiocese of Montevideo was created as the Apostolic Vicariate of Montevideo in 1830. The vicariate was promoted to the Diocese of Montevideo on 13 July 1878. Pope Leo XIII elevated it to the rank of a metropolitan archdiocese on 14 April 1897. The new archdiocese became the Metropolitan of the suffragan sees of Canelones, Florida, MaldonadoPunta del Este, Melo, Mercedes, Minas, Salto, San Jose de Mayo, Tacuarembo.
Is there an answer to this question: When was the Roman Catholic Archdiocese of Montevideo created?

Answer:
1830