Problem: In 1943, at the age of 16, Elizabeth undertook her first solo public appearance on a visit to the Grenadier Guards, of which she had been appointed colonel the previous year. As she approached her 18th birthday, parliament changed the law so that she could act as one of five Counsellors of State in the event of her father's incapacity or absence abroad, such as his visit to Italy in July 1944. In February 1945, she joined the Women's Auxiliary Territorial Service as an honorary second subaltern with the service number of 230873. She trained as a driver and mechanic and was promoted to honorary junior commander five months later.
In what capacity did Elizabeth serve in the Auxiliary?
The answer is the following: driver and mechanic

Problem: Across continental Europe, but in France especially, booksellers and publishers had to negotiate censorship laws of varying strictness. The Encyclopedie, for example, narrowly escaped seizure and had to be saved by Malesherbes, the man in charge of the French censure. Indeed, many publishing companies were conveniently located outside France so as to avoid overzealous French censors. They would smuggle their merchandise across the border, where it would then be transported to clandestine booksellers or small-time peddlers. The records of clandestine booksellers may give a better representation of what literate Frenchmen might have truly read, since their clandestine nature provided a less restrictive product choice. In one case, political books were the most popular category, primarily libels and pamphlets. Readers were more interested in sensationalist stories about criminals and political corruption than they were in political theory itself. The second most popular category, "general works" (those books "that did not have a dominant motif and that contained something to offend almost everyone in authority") demonstrated a high demand for generally low-brow subversive literature. However, these works never became part of literary canon, and are largely forgotten today as a result.
Which work narrowly escaped seizure and had to be saved by Malesherbes?
The answer is the following: The Encyclopedie

Problem: Walking is a popular recreational activity in London. Areas that provide for walks include Wimbledon Common, Epping Forest, Hampton Court Park, Hampstead Heath, the eight Royal Parks, canals and disused railway tracks. Access to canals and rivers has improved recently, including the creation of the Thames Path, some 28 miles (45 km) of which is within Greater London, and The Wandle Trail; this runs 12 miles (19 km) through South London along the River Wandle, a tributary of the River Thames. Other long distance paths, linking green spaces, have also been created, including the Capital Ring, the Green Chain Walk, London Outer Orbital Path ("Loop"), Jubilee Walkway, Lea Valley Walk, and the Diana, Princess of Wales Memorial Walk.
What is the London Outer Orbital Path commonly referred as?
The answer is the following: "Loop"

Problem: In soil, microorganisms that reside in the rhizosphere (a zone that includes the root surface and the soil that adheres to the root after gentle shaking) carry out nitrogen fixation, converting nitrogen gas to nitrogenous compounds. This serves to provide an easily absorbable form of nitrogen for many plants, which cannot fix nitrogen themselves. Many other bacteria are found as symbionts in humans and other organisms. For example, the presence of over 1,000 bacterial species in the normal human gut flora of the intestines can contribute to gut immunity, synthesise vitamins, such as folic acid, vitamin K and biotin, convert sugars to lactic acid (see Lactobacillus), as well as fermenting complex undigestible carbohydrates. The presence of this gut flora also inhibits the growth of potentially pathogenic bacteria (usually through competitive exclusion) and these beneficial bacteria are consequently sold as probiotic dietary supplements.
How does gut flora prevent growth of pathogenic bacteria?
The answer is the following:
through competitive exclusion