Question: Since before 2000 BC, humans have utilized pesticides to protect their crops. The first known pesticide was elemental sulfur dusting used in ancient Sumer about 4,500 years ago in ancient Mesopotamia. The Rig Veda, which is about 4,000 years old, mentions the use of poisonous plants for pest control. By the 15th century, toxic chemicals such as arsenic, mercury, and lead were being applied to crops to kill pests. In the 17th century, nicotine sulfate was extracted from tobacco leaves for use as an insecticide. The 19th century saw the introduction of two more natural pesticides, pyrethrum, which is derived from chrysanthemums, and rotenone, which is derived from the roots of tropical vegetables. Until the 1950s, arsenic-based pesticides were dominant. Paul Muller discovered that DDT was a very effective insecticide. Organochlorines such as DDT were dominant, but they were replaced in the U.S. by organophosphates and carbamates by 1975. Since then, pyrethrin compounds have become the dominant insecticide. Herbicides became common in the 1960s, led by "triazine and other nitrogen-based compounds, carboxylic acids such as 2,4-dichlorophenoxyacetic acid, and glyphosate".
Is there an answer to this question: Where was The Rig Veda written?

Answer: unanswerable

Question: Following the German unconditional surrender, Eisenhower was appointed Military Governor of the U.S. Occupation Zone, based at the IG Farben Building in Frankfurt am Main. He had no responsibility for the other three zones, controlled by Britain, France and the Soviet Union, except for the city of Berlin, which was managed by the Four-Power Authorities through the Allied Kommandatura as the governing body. Upon discovery of the Nazi concentration camps, he ordered camera crews to document evidence of the atrocities in them for use in the Nuremberg Trials. He reclassified German prisoners of war (POWs) in U.S. custody as Disarmed Enemy Forces (DEFs), who were no longer subject to the Geneva Convention. Eisenhower followed the orders laid down by the Joint Chiefs of Staff (JCS) in directive JCS 1067, but softened them by bringing in 400,000 tons of food for civilians and allowing more fraternization. In response to the devastation in Germany, including food shortages and an influx of refugees, he arranged distribution of American food and medical equipment. His actions reflected the new American attitudes of the German people as Nazi victims not villains, while aggressively purging the ex-Nazis.
Is there an answer to this question: In what city was the headquarters of the US Occupation Zone located?

Answer: Frankfurt am Main

Question: During the 19th century, Paris was the home and subject for some of France's greatest writers, including Charles Baudelaire, Stephane Mallarme, Merimee, Alfred de Musset, Marcel Proust, Emile Zola, Alexandre Dumas, Gustave Flaubert, Guy de Maupassant and Honore de Balzac. Victor Hugo's The Hunchback of Notre Dame inspired the renovation of its setting, the Notre-Dame de Paris. Another of Victor Hugo's works, Les Miserables, written while he was in exile outside France during the Second Empire, described the social change and political turmoil in Paris in the early 1830s. One of the most popular of all French writers, Jules Verne, worked at the Theatre Lyrique and the Paris stock exchange, while he did research for his stories at the National Library.
Is there an answer to this question: What book inspired the renovation of Notre Dame?

Answer: The Hunchback of Notre Dame

Question: The assumption that black-body radiation is thermal leads to an accurate prediction: the total amount of emitted energy goes up with the temperature according to a definite rule, the StefanBoltzmann law (187984). But it was also known that the colour of the light given off by a hot object changes with the temperature, so that "white hot" is hotter than "red hot". Nevertheless, Wilhelm Wien discovered the mathematical relationship between the peaks of the curves at different temperatures, by using the principle of adiabatic invariance. At each different temperature, the curve is moved over by Wien's displacement law (1893). Wien also proposed an approximation for the spectrum of the object, which was correct at high frequencies (short wavelength) but not at low frequencies (long wavelength). It still was not clear why the spectrum of a hot object had the form that it has (see diagram).
Is there an answer to this question: What characteristic of the light emitted by a hot object changes with temperature?

Answer:
the colour of the light given off