In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Example Input: Question: Jeff is stopping exercising his muscles at home. Over time his muscles will grow 
 Answer: smaller
Example Output: Muscles that are exercised are bigger and stronger than muscles that are not exercised.

Example Input: Question: Theresa increased the amount of water in her pool. Rock would likely melt 
 Answer: faster
Example Output: As the amount of water increases, the melting point of rock decreases.

Example Input: Question: The blood vessels near the top of the skin do what when it's cool? 
 Answer: contract
Example Output:
When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.