Question: Some of Antarctica has been warming up; particularly strong warming has been noted on the Antarctic Peninsula. A study by Eric Steig published in 2009 noted for the first time that the continent-wide average surface temperature trend of Antarctica is slightly positive at >0.05 °C (0.09 °F) per decade from 1957 to 2006. This study also noted that West Antarctica has warmed by more than 0.1 °C (0.2 °F) per decade in the last 50 years, and this warming is strongest in winter and spring. This is partly offset by autumn cooling in East Antarctica. There is evidence from one study that Antarctica is warming as a result of human carbon dioxide emissions, but this remains ambiguous. The amount of surface warming in West Antarctica, while large, has not led to appreciable melting at the surface, and is not directly affecting the West Antarctic Ice Sheet's contribution to sea level. Instead the recent increases in glacier outflow are believed to be due to an inflow of warm water from the deep ocean, just off the continental shelf. The net contribution to sea level from the Antarctic Peninsula is more likely to be a direct result of the much greater atmospheric warming there.
Is there an answer to this question: What has been the temperature trend of Antarctica per decade from 1959 to 2006?

Answer: unanswerable


Question: Although the drafts of both the Maastricht treaty and the Treaty establishing a Constitution for Europe mentioned federalism, the representatives of the member countries (all of whom would have had to agree to use of the term) never formally adopted it. The strongest advocates of European federalism have been Germany, Italy, Belgium and Luxembourg while those historically most strongly opposed have been the United Kingdom, Denmark and France (with conservative presidents and governments). Since the presidency of François Mitterrand (1981-1995), the French authorities have adopted a much more pro-European Unification position, as they consider that a strong EU is presenting the best "insurance" against a unified Germany which might become too strong and thus a threat for its neighbours.
Is there an answer to this question: Who opposed the European Federalism? 

Answer: United Kingdom, Denmark and France


Question: It is widely assumed that architectural success was the product of a process of trial and error, with progressively less trial and more replication as the results of the process proved increasingly satisfactory. What is termed vernacular architecture continues to be produced in many parts of the world. Indeed, vernacular buildings make up most of the built world that people experience every day. Early human settlements were mostly rural. Due to a surplus in production the economy began to expand resulting in urbanization thus creating urban areas which grew and evolved very rapidly in some cases, such as that of Çatal Höyük in Anatolia and Mohenjo Daro of the Indus Valley Civilization in modern-day Pakistan.
Is there an answer to this question: Why did the economy begin to expand?

Answer: a surplus in production


Question: Alloys of primarily zinc with small amounts of copper, aluminium, and magnesium are useful in die casting as well as spin casting, especially in the automotive, electrical, and hardware industries. These alloys are marketed under the name Zamak. An example of this is zinc aluminium. The low melting point together with the low viscosity of the alloy makes the production of small and intricate shapes possible. The low working temperature leads to rapid cooling of the cast products and therefore fast assembly is possible. Another alloy, marketed under the brand name Prestal, contains 78% zinc and 22% aluminium and is reported to be nearly as strong as steel but as malleable as plastic. This superplasticity of the alloy allows it to be molded using die casts made of ceramics and cement.
Is there an answer to this question: What are alloys of zinc mixed with copper, aluminium and plastic used for?

Answer:
unanswerable