Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

[EX Q]: Question: Like animals, protozoa are heterotrophic and capable of what? Answer: moving
[EX A]: Like animals, protozoa are heterotrophic and capable of moving.

[EX Q]: Question: He mass spectrometer measures the percent abundance of different what? Answer: isotopes
[EX A]: The mass spectrometer measures the percent abundance of different isotopes in a given sample.

[EX Q]: Question: What is the only substance on earth that is stable in all three states? Answer: water
[EX A]:
Water is the only substance on Earth that is stable in all three states.