Question: About 1150 species of fungi have been recorded from Antarctica, of which about 750 are non-lichen-forming and 400 are lichen-forming. Some of these species are cryptoendoliths as a result of evolution under extreme conditions, and have significantly contributed to shaping the impressive rock formations of the McMurdo Dry Valleys and surrounding mountain ridges. The apparently simple morphology, scarcely differentiated structures, metabolic systems and enzymes still active at very low temperatures, and reduced life cycles shown by such fungi make them particularly suited to harsh environments such as the McMurdo Dry Valleys. In particular, their thick-walled and strongly melanized cells make them resistant to UV light. Those features can also be observed in algae and cyanobacteria, suggesting that these are adaptations to the conditions prevailing in Antarctica. This has led to speculation that, if life ever occurred on Mars, it might have looked similar to Antarctic fungi such as Cryomyces minteri. Some of these fungi are also apparently endemic to Antarctica. Endemic Antarctic fungi also include certain dung-inhabiting species which have had to evolve in response to the double challenge of extreme cold while growing on dung, and the need to survive passage through the gut of warm-blooded animals.
Is there an answer to this question: Where are there 400 non-lichen forming fungi?

Answer: unanswerable


Question: During a panel discussion at Harvard University's reunion for African American alumni during the 2003–04 academic year, two prominent black professors at the institution—Lani Guinier and Henry Louis Gates—pointed out an unintended effect of affirmative action policies at Harvard. They stated that only about a third of black Harvard undergraduates were from families in which all four grandparents were born into the African American community. The majority of black students at Harvard were Caribbean and African immigrants or their children, with some others the mixed-race children of biracial couples. One Harvard student, born in the South Bronx to a black family whose ancestors have been in the United States for multiple generations, said that there were so few Harvard students from the historic African American community that they took to calling themselves "the descendants" (i.e., descendants of American slaves). The reasons for this underrepresentation of historic African Americans, and possible remedies, remain a subject of debate.
Is there an answer to this question: What portion of black Harvard undergraduates came from families in which all four grandparents were born into the African American community?

Answer: a third


Question: The reaction to the encyclical's continued prohibitions of artificial birth control was very mixed. In Italy, Spain, Portugal and Poland, the encyclical was welcomed. In Latin America, much support developed for the Pope and his encyclical. As World Bank President Robert McNamara declared at the 1968 Annual Meeting of the International Monetary Fund and the World Bank Group that countries permitting birth control practices would get preferential access to resources, doctors in La Paz, Bolivia called it insulting that money should be exchanged for the conscience of a Catholic nation. In Colombia, Cardinal archbishop Aníbal Muñoz Duque declared, if American conditionality undermines Papal teachings, we prefer not to receive one cent. The Senate of Bolivia passed a resolution stating that Humanae vitae could be discussed in its implications for individual consciences, but was of greatest significance because the papal document defended the rights of developing nations to determine their own population policies. The Jesuit Journal Sic dedicated one edition to the encyclical with supportive contributions.
Is there an answer to this question: What country did Cardinal archbishop Anlbal Munoz Duque represent?

Answer: Colombia


Question: Video data may be represented as a series of still image frames. The sequence of frames contains spatial and temporal redundancy that video compression algorithms attempt to eliminate or code in a smaller size. Similarities can be encoded by only storing differences between frames, or by using perceptual features of human vision. For example, small differences in color are more difficult to perceive than are changes in brightness. Compression algorithms can average a color across these similar areas to reduce space, in a manner similar to those used in JPEG image compression. Some of these methods are inherently lossy while others may preserve all relevant information from the original, uncompressed video.
Is there an answer to this question: What is easier to perceive than changes in frames?

Answer:
unanswerable