Problem: 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 saliva?
The answer is the following: a liquid secreted by the salivary glands

Problem: France and the Ottoman Empire, united by mutual opposition to Habsburg rule, became strong allies. The French conquests of Nice (1543) and Corsica (1553) occurred as a joint venture between the forces of the French king Francis I and Suleiman, and were commanded by the Ottoman admirals Barbarossa Hayreddin Pasha and Turgut Reis. A month prior to the siege of Nice, France supported the Ottomans with an artillery unit during the 1543 Ottoman conquest of Esztergom in northern Hungary. After further advances by the Turks, the Habsburg ruler Ferdinand officially recognized Ottoman ascendancy in Hungary in 1547.
France and the Ottoman Empire united against what?
The answer is the following: Habsburg rule

Problem: The Commissionerate of Health and Family Welfare is responsible for planning, implementation and monitoring of all facilities related to health and preventive services. As of 2010[update]–11, the city had 50 government hospitals, 300 private and charity hospitals and 194 nursing homes providing around 12,000 hospital beds, fewer than half the required 25,000. For every 10,000 people in the city, there are 17.6 hospital beds, 9 specialist doctors, 14 nurses and 6 physicians. The city also has about 4,000 individual clinics and 500 medical diagnostic centres. Private clinics are preferred by many residents because of the distance to, poor quality of care at and long waiting times in government facilities,:60–61 despite the high proportion of the city's residents being covered by government health insurance: 24% according to a National Family Health Survey in 2005.:41 As of 2012[update], many new private hospitals of various sizes were opened or being built. Hyderabad also has outpatient and inpatient facilities that use Unani, homeopathic and Ayurvedic treatments.
How many nurses per 10,000 persons are there in Hyderabad?
The answer is the following: 14 nurses

Problem: As part of the transition to democracy upon the death of Franco in 1975, Galicia regained its status as an autonomous region within Spain with the Statute of Autonomy of 1981, which begins, "Galicia, historical nationality, is constituted as an Autonomous Community to access to its self-government, in agreement with the Spanish Constitution and with the present Statute (...)". Varying degrees of nationalist or independentist sentiment are evident at the political level. The Bloque Nacionalista Galego or BNG, is a conglomerate of left-wing parties and individuals that claims Galician political status as a nation.
Which modern group now works to attain Galicia status as a nation?
The answer is the following:
Bloque Nacionalista Galego