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 is the most common cause of lung cancer? Answer: tobacco smoke exposure
Example Output: The new cells gradually move up through the epidermis toward the surface of the body. As they move, they produce the tough, fibrous protein called keratin.

Example Input: Question: What are the narrowest blood vessels, where oxygen is transferred into body cells? Answer: capillaries
Example Output: Red blood cells are flat, round, and very small. Their small size allows easy maneuverability through the capillaries, the narrowest blood vessels, where oxygen is transferred into body cells.

Example Input: Question: What word describes a change in behavior that occurs as a result of experience? Answer: learning
Example Output:
Learning is a change in behavior that occurs as a result of experience.