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

[EX Q]: In science, theory is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved.
[EX A]: In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved?

[EX Q]: According to the english system measurement, 4 cups much is equal to 2 pints, 1 quart, and ¼ of a gallon.
[EX A]: According to the english system measurement, how much is equal to 2 pints, 1 quart, and ¼ of a gallon?

[EX Q]: When electrons return to a lower energy level, they emit the excess energy in the form of light.
[EX A]:
When electrons return to a lower energy level, they emit the excess energy in the form of what?