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.

Q: Question: What kind of diagrams can be used to illustrate electron movements and ion formation? Answer: electron dot diagrams

A: Electron dot diagrams can be used to illustrate electron movements and ion formation.
****
Q: Question: What do scientists believe are the oldest eukaryotes? Answer: protists

A: Scientists think that protists are the oldest eukaryotes. They most likely evolved from prokaryotic cells, as explained by the endosymbiotic theory. This theory is well-supported by evidence.
****
Q: Question: Whisk ferns have yellow sporangia and no what? Answer: leaves

A:
Whisk ferns have yellow sporangia and no leaves.
****