Question: Unlike vermilion or red ochre, made from minerals, red lake pigments are made by mixing organic dyes, made from insects or plants, with white chalk or alum. Red lac was made from the gum lac, the dark red resinous substance secreted by various scale insects, particularly the Laccifer lacca from India. Carmine lake was made from the cochineal insect from Central and South America, Kermes lake came from a different scale insect, kermes vermilio, which thrived on oak trees around the Mediterranean. Other red lakes were made from the rose madder plant and from the brazilwood tree.
Try to answer this question if possible: What was made from red gum?
Answer: unanswerable
Question: Sirri Amer was close to King Farouk, and was nominated for the presidency of the Officer's Clubnormally a ceremonial officewith the king's backing. Nasser was determined to establish the independence of the army from the monarchy, and with Amer as the intercessor, resolved to field a nominee for the Free Officers. They selected Muhammad Naguib, a popular general who had offered his resignation to Farouk in 1942 over British high-handedness and was wounded three times in the Palestine War. Naguib won overwhelmingly and the Free Officers, through their connection with a leading Egyptian daily, al-Misri, publicized his victory while praising the nationalistic spirit of the army.
Try to answer this question if possible: In what war was Naguib wounded?
Answer: Palestine War
Question: In the sixth edition Darwin inserted a new chapter VII (renumbering the subsequent chapters) to respond to criticisms of earlier editions, including the objection that many features of organisms were not adaptive and could not have been produced by natural selection. He said some such features could have been by-products of adaptive changes to other features, and that often features seemed non-adaptive because their function was unknown, as shown by his book on Fertilisation of Orchids that explained how their elaborate structures facilitated pollination by insects. Much of the chapter responds to George Jackson Mivart's criticisms, including his claim that features such as baleen filters in whales, flatfish with both eyes on one side and the camouflage of stick insects could not have evolved through natural selection because intermediate stages would not have been adaptive. Darwin proposed scenarios for the incremental evolution of each feature.
Try to answer this question if possible: Which of Darwin's books featured a plant whose elaborate structure aided with fertilization by insects?
Answer: Fertilisation of Orchids
Question: A number of technologies allow asphalt/bitumen to be mixed at much lower temperatures. These involve mixing with petroleum solvents to form "cutbacks" with reduced melting point, or mixtures with water to turn the asphalt/bitumen into an emulsion. Asphalt emulsions contain up to 70% asphalt/bitumen and typically less than 1.5% chemical additives. There are two main types of emulsions with different affinity for aggregates, cationic and anionic. Asphalt emulsions are used in a wide variety of applications. Chipseal involves spraying the road surface with asphalt emulsion followed by a layer of crushed rock, gravel or crushed slag. Slurry seal involves the creation of a mixture of asphalt emulsion and fine crushed aggregate that is spread on the surface of a road. Cold-mixed asphalt can also be made from asphalt emulsion to create pavements similar to hot-mixed asphalt, several inches in depth and asphalt emulsions are also blended into recycled hot-mix asphalt to create low-cost pavements.
Try to answer this question if possible: What are some bitumen emulsions blended with to make a low-cost product?
Answer:
recycled