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

[EX Q]: Once a plant cell becomes specialized, divide can they no longer do.
[EX A]: Once a plant cell becomes specialized, what can they no longer do?

[EX Q]: Carbon dioxide is an example of a material that easily undergoes sublimation.
[EX A]: Carbon dioxide is an example of a material that easily undergoes what?

[EX Q]: An organism that carries pathogens from one individual to another is called a vector.
[EX A]:
An organism that carries pathogens from one individual to another is called what?