Problem: Black people:

Indigenous Australians have been referred to as "black people" in Australia since the early days of European settlement. While originally related to skin colour, the term is used to today to indicate Aboriginal or Torres Strait Islander ancestry in general and can refer to people of any skin pigmentation.

Since when have Indigenous Australians been referred to as black?
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A: since the early days of European settlement

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 is the name of a bacteria inside of tree roots?
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A: Frankia

Problem: Translation:

The 19th century brought new standards of accuracy and style. In regard to accuracy, observes J.M. Cohen, the policy became "the text, the whole text, and nothing but the text", except for any bawdy passages and the addition of copious explanatory footnotes. In regard to style, the Victorians' aim, achieved through far-reaching metaphrase (literality) or pseudo-metaphrase, was to constantly remind readers that they were reading a foreign classic. An exception was the outstanding translation in this period, Edward FitzGerald's Rubaiyat of Omar Khayyam (1859), which achieved its Oriental flavor largely by using Persian names and discreet Biblical echoes and actually drew little of its material from the Persian original.

Who observed that the policy became "the text, the whole text, and nothing but the text"?
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A: J.M. Cohen

Problem: Estonia:

The Prime Minister has the right to appoint a maximum of three such ministers, as the limit of ministers in one government is fifteen. It is also known as the cabinet. The cabinet carries out the country's domestic and foreign policy, shaped by parliament; it directs and co-ordinates the work of government institutions and bears full responsibility for everything occurring within the authority of executive power. The government, headed by the Prime Minister, thus represents the political leadership of the country and makes decisions in the name of the whole executive power.

What strategy does the cabinet execute?
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A:
domestic and foreign policy