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: The outer layer of what anatomical structure is so tough that it keeps out most pathogens? Answer: skin
Example Output: This drawing shows that the skin has many layers. The outer layer is so tough that it keeps out most pathogens.

Example Input: Question: What do we call the seasonal movement of animals? Answer: migration
Example Output: Monarch butterflies gather in large groups as they migrate 2,500 miles south each fall. They return to the north in the spring. This migration is a cycle that repeats every year.

Example Input: Question: Roots, stems and leaves are organs commonly found in what? Answer: plants
Example Output:
The three types of tissues work together in most plant organs. Three organs commonly found in modern plants are roots, stems, and leaves.