Question: The Tucson metro area is served by many local television stations and is the 68th largest designated market area (DMA) in the U.S. with 433,310 homes (0.39% of the total U.S.). It is limited to the three counties of southeastern Arizona (Pima, Santa Cruz, and Cochise) The major television networks serving Tucson are: KVOA 4 (NBC), KGUN 9 (ABC), KMSB-TV 11 (Fox), KOLD-TV 13 (CBS), KTTU 18 (My Network TV) and KWBA 58 (The CW). KUAT-TV 6 is a PBS affiliate run by the University of Arizona (as is sister station KUAS 27).
Is there an answer to this question: What is Tucson's ABC station?

Answer: KGUN 9

Question: Snapshots usually become available more than six months after they are archived or, in some cases, even later; it can take twenty-four months or longer. The frequency of snapshots is variable, so not all tracked web site updates are recorded. Sometimes there are intervals of several weeks or years between snapshots.
Is there an answer to this question: How long are intervals between cases?

Answer: unanswerable

Question: Epigenetics is the study of mitotically and/or meiotically heritable changes in gene function that cannot be explained by changes in the underlying DNA sequence but cause the organism's genes to behave (or "express themselves") differently. One example of epigenetic change is the marking of the genes by DNA methylation which determines whether they will be expressed or not. Gene expression can also be controlled by repressor proteins that attach to silencer regions of the DNA and prevent that region of the DNA code from being expressed. Epigenetic marks may be added or removed from the DNA during programmed stages of development of the plant, and are responsible, for example, for the differences between anthers, petals and normal leaves, despite the fact that they all have the same underlying genetic code. Epigenetic changes may be temporary or may remain through successive cell divisions for the remainder of the cell's life. Some epigenetic changes have been shown to be heritable, while others are reset in the germ cells.
Is there an answer to this question: Are the changes then presented, permanent?

Answer: may be temporary

Question: Feynman was a keen popularizer of physics through both books and lectures, including a 1959 talk on top-down nanotechnology called There's Plenty of Room at the Bottom, and the three-volume publication of his undergraduate lectures, The Feynman Lectures on Physics. Feynman also became known through his semi-autobiographical books Surely You're Joking, Mr. Feynman! and What Do You Care What Other People Think? and books written about him, such as Tuva or Bust! and Genius: The Life and Science of Richard Feynman by James Gleick.
Is there an answer to this question: What was the name of Feynman's lectures he made as an undergraduate?

Answer:
The Feynman Lectures on Physics