Problem: The fossil record suggests that the last few million years featured the greatest biodiversity in history. However, not all scientists support this view, since there is uncertainty as to how strongly the fossil record is biased by the greater availability and preservation of recent geologic sections. Some scientists believe that corrected for sampling artifacts, modern biodiversity may not be much different from biodiversity 300 million years ago., whereas others consider the fossil record reasonably reflective of the diversification of life. Estimates of the present global macroscopic species diversity vary from 2 million to 100 million, with a best estimate of somewhere near 9 million, the vast majority arthropods. Diversity appears to increase continually in the absence of natural selection.
What suggests that the last few million years featured the greatest scientists in history?
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Answer: unanswerable


Problem: Neville Southall holds the record for the most Everton appearances, having played 751 first-team matches between 1981 and 1997, and previously held the record for the most league clean sheets during a season (15). During the 2008–09 season, this record was beaten by American goalkeeper Tim Howard (17). The late centre half and former captain Brian Labone comes second, having played 534 times. The longest serving player is Goalkeeper Ted Sagar who played for 23 years between 1929 and 1953, both sides of the Second World War, making a total of 495 appearances. The club's top goalscorer, with 383 goals in all competitions, is Dixie Dean; the second-highest goalscorer is Graeme Sharp with 159. Dean still holds the English national record of most goals in a season, with 60.
Who currently holds the record for the most league clean sheets during a season?
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Answer: Tim Howard


Problem: The discovery of the element is credited to the German chemist Martin Heinrich Klaproth. While he was working in his experimental laboratory in Berlin in 1789, Klaproth was able to precipitate a yellow compound (likely sodium diuranate) by dissolving pitchblende in nitric acid and neutralizing the solution with sodium hydroxide. Klaproth assumed the yellow substance was the oxide of a yet-undiscovered element and heated it with charcoal to obtain a black powder, which he thought was the newly discovered metal itself (in fact, that powder was an oxide of uranium). He named the newly discovered element after the planet Uranus, (named after the primordial Greek god of the sky), which had been discovered eight years earlier by William Herschel.
Who discovered the planet Uranus?
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Answer:
William Herschel