Problem: Ahmad ibn Fadlan, an Arab traveler during the 10th century, provided one of the earliest written descriptions of the Rus': "They are as tall as a date palm, blond and ruddy, so that they do not need to wear a tunic nor a cloak; rather the men among them wear garments that only cover half of his body and leaves one of his hands free." Liutprand of Cremona, who was twice an envoy to the Byzantine court (949 and 968), identifies the "Russi" with the Norse ("the Russi, whom we call Norsemen by another name") but explains the name as a Greek term referring to their physical traits ("A certain people made up of a part of the Norse, whom the Greeks call [...] the Russi on account of their physical features, we designate as Norsemen because of the location of their origin."). Leo the Deacon, a 10th-century Byzantine historian and chronicler, refers to the Rus' as "Scythians" and notes that they tended to adopt Greek rituals and customs.
What covered the majority of the Rus's body?
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Answer: unanswerable


Problem: Endosymbiosis is any symbiotic relationship in which one symbiont lives within the tissues of the other, either within the cells or extracellularly. Examples include diverse microbiomes, rhizobia, nitrogen-fixing bacteria that live in root nodules on legume roots; actinomycete nitrogen-fixing bacteria called Frankia, which live in alder tree root nodules; single-celled algae inside reef-building corals; and bacterial endosymbionts that provide essential nutrients to about 10%–15% of insects.
What percent of alder tree root nodules provide essential nutrients to insects?
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Answer: unanswerable


Problem: It was at Port Said that Nasser saw a confrontation with the invading forces as being the strategic and psychological focal point of Egypt's defense. A third infantry battalion and hundreds of national guardsmen were sent to the city as reinforcements, while two regular companies were dispatched to organize popular resistance. Nasser and Boghdadi traveled to the canal zone to boost the morale of the armed volunteers. According to Boghdadi's memoirs, Nasser described the Egyptian Army as "shattered" as he saw the wreckage of Egyptian military equipment en route. When British and French forces landed in Port Said on 5–6 November, its local militia put up a stiff resistance, resulting in street-to-street fighting. The Egyptian Army commander in the city was preparing to request terms for a ceasefire, but Nasser ordered him to desist. The British-French forces managed to largely secure the city by 7 November. Between 750 and 1,000 Egyptians were killed in the battle for Port Said.
In what state was the Egyptian army after fighting the French and UK?
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Answer:
shattered