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

[Q]: Most ferns produce the same type of spores and are therefore called homosporous.
[A]: Most ferns produce the same type of spores and are therefore called what?


[Q]: Dig a well allows people to access water in an aquifer that does not flow from a spring or a geyser.
[A]: How can people access water in an aquifer that does not flow from a spring or a geyser?


[Q]: The creation of a voltage across a current-carrying conductor by a magnetic field is known as hall effect.
[A]:
The creation of a voltage across a current-carrying conductor by a magnetic field is known as what?