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: Why are noninfectious diseases not contagious? Answer: non-pathogen caused
[EX A]: Noninfectious diseases are not contagious because they are not caused by pathogens. Instead, they are caused by such factors as lifestyle choices, environmental toxins, or mutations.

[EX Q]: Question: When do female reproductive organs mature? Answer: at puberty
[EX A]: Female reproductive organs form before birth. However, they do not mature until puberty.

[EX Q]: Question: Oxygenated blood is transported by what system? Answer: circulatory
[EX A]:
Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body.