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

[EX Q]: Endoscopes are used to explore the body through various orifices or minor incisions.
[EX A]: Endoscopes are used to explore the body through various orifices or these?

[EX Q]: Oil is the most commonly used source of energy in the world.
[EX A]: What is the most commonly used source of energy in the world?

[EX Q]: Fission takes place when an animal simply divides into two parts.
[EX A]:
What type of reproduction takes place when an animal simply divides into two parts?