instruction:
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.
question:
Question: What is used to fluoridate drinking water to promote dental health Answer: calcium fluoride
answer:
Calcium fluoride is used to fluoridate drinking water to promote dental health. Crystalline CaF 2 (d = 3.1805 3.

question:
Question: Light moving from air into water is bent ___________ the normal? Answer: more
answer:
Light moving from air into water is bent ___________ the normal.

question:
Question: Diagnosing and treating cancer is a beneficial use of what potentially dangerous energy? Answer: radiation
answer:
Radiation has several important uses, including diagnosing and treating cancer.