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.

Example input: Question: What term refers to a list of the elements that will replace the ones below them in single-replacement reactions? Answer: activity series
Example output: A list called the activity series does the same thing the periodic table does for halogens: it lists the elements that will replace elements below them in single-replacement reactions.
Example explanation: This is a valid supporting statement since it connects both the answers and question to generate the supporting fact
Q: Question: All chemical changes involve a transfer of what? Answer: energy
A:
Describe ways protists are important to humans.