Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[EX Q]: The earth's magnetic poles have switched places repeatedly in the past.
[EX A]: The earth's magnetic poles have done what repeatedly in the past?

[EX Q]: Demagnetization is the process in which a magnet loses its magnetic properties.
[EX A]: What is the process called in which a magnet loses its magnetic properties?

[EX Q]: Deposition of sediments change in earth’s surface is most directly related to the water cycle.
[EX A]:
Which change in Earth’s surface is most directly related to the water cycle?