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

[EX Q]: On a global scale, plants and other photosynthetic organisms have generated all of the oxygen in the air.
[EX A]: On a global scale, plants and other photosynthetic organisms have generated all of what element in the air?

[EX Q]: The goal of proteomics is to identify or compare proteins expressed from a given genome under specific conditions, study the interactions between them, and use the information to predict cell behavior or develop drug targets.
[EX A]: The goal of proteomics is to identify or compare what substances expressed from a given genome under specific conditions, study the interactions between them, and use the information to predict cell behavior or develop drug targets?

[EX Q]: Depth and density are the two factors that affect the pressure of fluids.
[EX A]:
What are the two factors that affect the pressure of fluids?