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 the process of changing something from a gas to a liquid? Answer: condensation
answer:
Condensation is the change of state from a gas to a liquid.

question:
Question: What is caused when circulating blood puts pressure on the walls of blood vessels? Answer: blood pressure
answer:
Blood pressure occurs when circulating blood puts pressure on the walls of blood vessels.

question:
Question: Models may be physical, conceptual, or what else? Answer: mathematical
answer:
Models may be physical, conceptual, or mathematical.