Question: Many mailbox providers are also access providers, while others are not (e.g., Yahoo! Mail, Outlook.com, Gmail, AOL Mail, Po box). The definition given in RFC 6650 covers email hosting services, as well as the relevant department of companies, universities, organizations, groups, and individuals that manage their mail servers themselves. The task is typically accomplished by implementing Simple Mail Transfer Protocol (SMTP) and possibly providing access to messages through Internet Message Access Protocol (IMAP), the Post Office Protocol, Webmail, or a proprietary protocol.
Is there an answer to this question: What is used by organizations that depend on others to provide mail services?

Answer: unanswerable


Question: The light energy captured by chlorophyll a is initially in the form of electrons (and later a proton gradient) that's used to make molecules of ATP and NADPH which temporarily store and transport energy. Their energy is used in the light-independent reactions of the Calvin cycle by the enzyme rubisco to produce molecules of the 3-carbon sugar glyceraldehyde 3-phosphate (G3P). Glyceraldehyde 3-phosphate is the first product of photosynthesis and the raw material from which glucose and almost all other organic molecules of biological origin are synthesized. Some of the glucose is converted to starch which is stored in the chloroplast. Starch is the characteristic energy store of most land plants and algae, while inulin, a polymer of fructose is used for the same purpose in the sunflower family Asteraceae. Some of the glucose is converted to sucrose (common table sugar) for export to the rest of the plant.
Is there an answer to this question: Why is table sugar produced?

Answer: for export to the rest of the plant


Question: The phenomenon known as "passing as white" is difficult to explain in other countries or to foreign students. Typical questions are: "Shouldn't Americans say that a person who is passing as white is white, or nearly all white, and has previously been passing as black?" or "To be consistent, shouldn't you say that someone who is one-eighth white is passing as black?" ... A person who is one-fourth or less American Indian or Korean or Filipino is not regarded as passing if he or she intermarries with and joins fully the life of the dominant community, so the minority ancestry need not be hidden. ... It is often suggested that the key reason for this is that the physical differences between these other groups and whites are less pronounced than the physical differences between African blacks and whites, and therefore are less threatening to whites. ... [W]hen ancestry in one of these racial minority groups does not exceed one-fourth, a person is not defined solely as a member of that group.
Is there an answer to this question: What is considered more threatening to African blacks?

Answer: unanswerable


Question: The record attendance for an Everton home match is 78,299 against Liverpool on 18 September 1948. Amazingly, there was only 1 injury at this game-Tom Fleetwood was hit on the head by a coin thrown from the crowd whilst he marched around the perimeter with St Edward's Orphanage Band, playing the cornet. Goodison Park, like all major English football grounds since the recommendations of the Taylor Report were implemented, is now an all-seater and only holds just under 40,000, meaning it is unlikely that this attendance record will ever be broken at Goodison. Everton's record transfer paid was to Chelsea for Belgian forward Romelu Lukaku for a sum of £28m. Everton bought the player after he played the previous year with the team on loan.
Is there an answer to this question: In what year was Goodison Park built?

Answer:
unanswerable