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BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
What is rhino horn made of? Detailed answer
Directory / Big encyclopedia. Questions for quiz and self-education Did you know? What is rhino horn made of? Contrary to what some of you might think, rhino horn is not hair at all. It is made up of extremely thin, tightly woven fibers of a horny substance called keratin. Keratin is a protein found in human hair and nails, as well as animal claws and hooves, bird feathers, porcupine quills, and the shells of armadillos and turtles. The rhinoceros is the only animal whose horn is composed entirely of keratin; unlike the horns of livestock, rams, antelopes and giraffes, there is no horn core inside the rhinoceros horn. From the skull of a dead rhinoceros, you won't even guess that a horn was once present here; during the life of the beast, the horn was securely attached to a rough outgrowth on the skin above the nasal bone. If you cut off or damage the horn of a rhino, it literally unwinds, but in young individuals it can grow back. No one knows what its real function is, although females whose horn has been removed, for some reason, completely stop looking after their offspring. Rhinos are endangered, and this is primarily due to the huge demand for their horns. African rhinoceros horn is highly prized in the Middle East, especially in Yemen, both for medical reasons and for traditional dagger hilts. Since 1970, 67 kg of rhinoceros horns have been imported into Yemen. With an average weight of 050 kg per horn, this means that 3 rhinos were killed. Mankind cannot get rid of the misconception that rhinoceros horn is a powerful aphrodisiac. Chinese herbalists tell us that this is not the case, that the effect of the horn is more cooling than warming, and that it is generally used in the treatment of high blood pressure and fever. The name rhinoceros (Rhinoceros) comes from two Greek words: rhino ("nose") and keras ("horn"). Today, there are five species of rhinoceros in the world: black, white, Indian, Javanese and Sumatran. Of the Javanese, only sixty individuals survived. This is the fourth most endangered species - after the Chinese lake dolphin from the Yangtze River, the marmot from Vancouver Island and the case-tailed (or bag-winged) bat that lives in the Seychelles. The white rhino is not white at all. The word white is actually a corruption of weit, which means "wide" in Afrikaans. This definition refers to the animal's mouth rather than to the volume of its chest, since, unlike black individuals, whites lack the movable lips normally used to eat tree branches. Any rhinoceros has an excellent sense of smell and hearing, but vision is just a nightmare. Rhinos usually live alone and converge only for mating. If caught off guard, a rhinoceros will urinate and defecate profusely. When attacking, the Asiatic rhinoceros bites; the African attacks by rushing forward. The black rhinoceros, despite its short legs, can run at a speed of 55 km/h. Author: John Lloyd, John Mitchinson
Who wrote the music first? Apparently, all primitive people had some kind of music. But the sounds they produced were very different from modern music. Primitive music was often a combination of long and loud exclamations, sighs, groans and wails. The singing was accompanied by dancing, clapping and the sound of drums. Folk music has existed for centuries and passed from generation to generation by ear, without recording. Music has also been composed for many centuries. In all ancient cultures: the Chinese, Hindus, Egyptians, Assyrians and Jews - there was music. Most of it was not like ours. The Greeks made complex music by putting together notes, which is reminiscent of modern scales. For writing, they used the letters of the alphabet, written above the syllables of words. After the Greeks and Romans, who adopted their music from the Greeks, the Christian church played a big role in the development of music. Saint Ambrose and Saint Gregory started the style of music known as simple singing. It was singing in unison. The notes followed one after another, which completely coincided with the method developed by the ancient Greeks. The churchmen also learned how to record music. The modern way of recording music traces its origins to this system. In 1600, Jacopo Peri wrote the first opera, which was called "Eurydice". Subsequently, composers such as Monteverdi began to write not only operas, but also instrumental music, such as violin music. Music began to be written for court dances, carnivals and theatrical performances. And after a while, great composers appeared, whose music we still enjoy: Bach, Handel, Haydn, Mozart and Beethoven.
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