Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Commensalism describes a relationship between two living organisms where one benefits and the other is not significantly harmed or helped. It is derived from the English word commensal used of human social interaction. The word derives from the medieval Latin word, formed from com- and mensa, meaning "sharing a table".
Commensalism explains a relationship between how many organisms when one gains most of the benefits?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The multitude of Middle Iranian languages and peoples indicate that great linguistic diversity must have existed among the ancient speakers of Iranian languages. Of that variety of languages/dialects, direct evidence of only two have survived. These are:
How many of the Middlie Iranian tongues have remained in existence since ancient time?
A: two

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
It seems to have been St Bernard of Clairvaux who, in the 12th century, explicitly raised the question of the Immaculate Conception. A feast of the Conception of the Blessed Virgin had already begun to be celebrated in some churches of the West. St Bernard blames the canons of the metropolitan church of Lyon for instituting such a festival without the permission of the Holy See. In doing so, he takes occasion to repudiate altogether the view that the conception of Mary was sinless. It is doubtful, however, whether he was using the term "conception" in the same sense in which it is used in the definition of Pope Pius IX. Bernard would seem to have been speaking of conception in the active sense of the mother's cooperation, for in his argument he says: "How can there be absence of sin where there is concupiscence (libido)?" and stronger expressions follow, showing that he is speaking of the mother and not of the child.
Did the query starter believe that the festival for Mary's conception had authorization to be held ?
A: instituting such a festival without the permission of the Holy See

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Urban heat islands (UHI) are metropolitan areas with higher temperatures than that of the surrounding environment. The higher temperatures are a result of increased absorption of the Solar light by urban materials such as asphalt and concrete, which have lower albedos and higher heat capacities than those in the natural environment. A straightforward method of counteracting the UHI effect is to paint buildings and roads white and plant trees. Using these methods, a hypothetical "cool communities" program in Los Angeles has projected that urban temperatures could be reduced by approximately 3 C at an estimated cost of US$1 billion, giving estimated total annual benefits of US$530 million from reduced air-conditioning costs and healthcare savings.
What are the metropolitan areas with higher temperatures than the surrounding areas called?
A:
Urban heat islands