Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The climate of the Cretaceous is less certain and more widely disputed. Higher levels of carbon dioxide in the atmosphere are thought to have caused the world temperature gradient from north to south to become almost flat: temperatures were about the same across the planet. Average temperatures were also higher than today by about 10C. In fact, by the middle Cretaceous, equatorial ocean waters (perhaps as warm as 20 C in the deep ocean) may have been too warm for sea life,[dubious discuss][citation needed] and land areas near the equator may have been deserts despite their proximity to water. The circulation of oxygen to the deep ocean may also have been disrupted.[dubious discuss] For this reason, large volumes of organic matter that was unable to decompose accumulated, eventually being deposited as "black shale".
What is uncertain about the Cretaceous?
A: climate

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Navigation is based on a variety of senses. Many birds have been shown to use a sun compass. Using the sun for direction involves the need for making compensation based on the time. Navigation has also been shown to be based on a combination of other abilities including the ability to detect magnetic fields (magnetoception), use visual landmarks as well as olfactory cues.
What is magnetoception?
A: the ability to detect magnetic fields

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Some critics believe that a clear-text edition gives the edited text too great a prominence, relegating textual variants to appendices that are difficult to use, and suggesting a greater sense of certainty about the established text than it deserves. As Shillingsburg notes, "English scholarly editions have tended to use notes at the foot of the text page, indicating, tacitly, a greater modesty about the "established" text and drawing attention more forcibly to at least some of the alternative forms of the text".
Are appendices easy to use for the average reader?
A: appendices that are difficult to use,

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Albertus Magnus championed the idea, drawn from Dionysus, that positive knowledge of God is possible, but obscure. Thus, it is easier to state what God is not, than to state what God is: "... we affirm things of God only relatively, that is, casually, whereas we deny things of God absolutely, that is, with reference to what He is in Himself. And there is no contradiction between a relative affirmation and an absolute negation. It is not contradictory to say that someone is white-toothed and not white".
What is there contradiction between?
A:
unanswerable