Here is a question about this article: In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work. After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. As these two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which is waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes.
What is the answer to this question: What is in saliva that starts to digest the starches?
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So... salivary amylase


Here is a question about this article: The thermionic triode, a vacuum tube invented in 1907, enabled amplified radio technology and long-distance telephony. The triode, however, was a fragile device that consumed a lot of power. Physicist Julius Edgar Lilienfeld filed a patent for a field-effect transistor (FET) in Canada in 1925, which was intended to be a solid-state replacement for the triode. Lilienfeld also filed identical patents in the United States in 1926 and 1928. However, Lilienfeld did not publish any research articles about his devices nor did his patents cite any specific examples of a working prototype. Because the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device had been built. In 1934, German inventor Oskar Heil patented a similar device.
What is the answer to this question: What was the purpose of the thermionic triode?
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So... amplified radio technology and long-distance telephony


Here is a question about this article: Egypt has a wide range of beaches situated on the Mediterranean and the Red Sea that extend to over 3,000 km. The Red Sea has serene waters, coloured coral reefs, rare fish and beautiful mountains. The Akba Gulf beaches also provide facilities for practising sea sports. Safaga tops the Red Sea zone with its beautiful location on the Suez Gulf. Last but not least, Sharm el-Sheikh (or City of Peace), Hurghada, Luxor (known as world's greatest open-air museum/ or City of the ⅓ of world monuments), Dahab, Ras Sidr, Marsa Alam, Safaga and the northern coast of the Mediterranean are major tourist's destinations of the recreational tourism.
What is the answer to this question: What locations on Egypt's northern coast are major tourist destinations for recreational tourism?
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So...
Dahab, Ras Sidr, Marsa Alam, Safaga