Question: The Premier League is broadcast in the United States through NBC Sports. Premier League viewership has increased rapidly, with NBC and NBCSN averaging a record 479,000 viewers in the 201415 season, up 118% from 201213 when coverage still aired on Fox Soccer and ESPN/ESPN2 (220,000 viewers), and NBC Sports has been widely praised for its coverage. NBC Sports reached a six-year extension with the Premier League in 2015 to broadcast the league through the 202122 season in a deal valued at $1 billion (640 million).
Is there an answer to this question: By what percentage has viewership in the US risen from 2012 to 2015?

Answer: 118%

Question: The axiom of foundation established that every set can be constructed from the bottom up in an ordered succession of steps by way of the principles of Zermelo and Fraenkel, in such a manner that if one set belongs to another then the first must necessarily come before the second in the succession, hence excluding the possibility of a set belonging to itself. To demonstrate that the addition of this new axiom to the others did not produce contradictions, von Neumann introduced a method of demonstration, called the method of inner models, which later became an essential instrument in set theory.
Is there an answer to this question: Zermelo and Fraenkel's axiom of foundation established that every set be constructed how?

Answer: from the bottom up in an ordered succession of steps

Question: It is now known that the molecular circadian clock can function within a single cell; i.e., it is cell-autonomous. This was shown by Gene Block in isolated mollusk BRNs.[clarification needed] At the same time, different cells may communicate with each other resulting in a synchronised output of electrical signaling. These may interface with endocrine glands of the brain to result in periodic release of hormones. The receptors for these hormones may be located far across the body and synchronise the peripheral clocks of various organs. Thus, the information of the time of the day as relayed by the eyes travels to the clock in the brain, and, through that, clocks in the rest of the body may be synchronised. This is how the timing of, for example, sleep/wake, body temperature, thirst, and appetite are coordinately controlled by the biological clock.[citation needed]
Is there an answer to this question: What requires multiple cells to function?

Answer: unanswerable

Question: Tower Control controls aircraft on the runway and in the controlled airspace immediately surrounding the airport. Tower controllers may use radar to locate an aircraft's position in three-dimensional space, or they may rely on pilot position reports and visual observation. They coordinate the sequencing of aircraft in the traffic pattern and direct aircraft on how to safely join and leave the circuit. Aircraft which are only passing through the airspace must also contact Tower Control in order to be sure that they remain clear of other traffic.
Is there an answer to this question: Why should aircraft that is only passing through an airspace contact Tower Control?

Answer:
in order to be sure that they remain clear of other traffic