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

[Q]: After fertilization, a zygote forms into two cells.
[A]: After fertilization, how many cells does a zygote form into?


[Q]: Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.
[A]: Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?


[Q]: Plant nutrition is the study of the chemical elements necessary for plant growth.
[A]:
What is the study of the chemical elements necessary for plant growth called?