Problem: Russian Soviet Federative Socialist Republic:

On February 8, 1955, Malenkov was officially demoted to deputy Prime Minister. As First Secretary of the Central Committee of the Communist Party, Nikita Khrushchev's authority was significantly enhanced by Malenkov's demotion.

Who benefited from the promotion of Malenkov?
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A: unanswerable

Problem: New Haven, Connecticut:

The U.S. Census Bureau reports a 2010 population of 129,779, with 47,094 households and 25,854 families within the city of New Haven. The population density is 6,859.8 people per square mile (2,648.6/km). There are 52,941 housing units at an average density of 2,808.5 per square mile (1,084.4/km). The racial makeup of the city is 42.6% White, 35.4% African American, 0.5% Native American, 4.6% Asian, 0.1% Pacific Islander, 12.9% from other races, and 3.9% from two or more races. Hispanic or Latino residents of any race were 27.4% of the population. Non-Hispanic Whites were 31.8% of the population in 2010, down from 69.6% in 1970. The city's demography is shifting rapidly: New Haven has always been a city of immigrants and currently the Latino population is growing rapidly. Previous influxes among ethnic groups have been African-Americans in the postwar era, and Irish, Italian and (to a lesser degree) Slavic peoples in the prewar period.

New Haven has a large immigrant population, what seems to be one of the main cause of it throughout the last century?
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A: postwar

Problem: Napoleon:

After the fall of Napoleon, not only was Napoleonic Code retained by conquered countries including the Netherlands, Belgium, parts of Italy and Germany, but has been used as the basis of certain parts of law outside Europe including the Dominican Republic, the US state of Louisiana and the Canadian province of Quebec. The memory of Napoleon in Poland is favorable, for his support for independence and opposition to Russia, his legal code, the abolition of serfdom, and the introduction of modern middle class bureaucracies.

Poland views Napoleon in a positive light partially based on his opposition to what country?
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A: Russia

Problem: Symbiosis:

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 endosymbionts live in coral?
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A:
algae