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: Which law means that the simplest of competing theories is most likely to be correct? Answer: law of parsimony
answer:
The formation of scientific theories is generally guided by the law of parsimony. According to this law, the simplest of competing theories is most likely to be correct.

question:
Question: Pressure and ________ are directly proportional at a constant volume? Answer: temperature
answer:
Pressure and temperature are directly proportional at a constant volume.

question:
Question: Hydropower is generated with what natural resource? Answer: water
answer:
Hydropower utilizes the energy of falling water.