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: A smoker's body works _____ just to get needed air. 
 Answer: more
Example Output: When a person smokes there are chemicals released by the tobacco that enter the lungs. Because the lungs have to work harder to remove the chemicals, the body has to work harder to get the air needed to survive.

Example Input: Question: Ron is trying to figure out how old some isotopes are. The isotopes are decaying very slowly, so they are likely specimens that are 
 Answer: older
Example Output:
Because these isotopes decay more slowly, they can be used to date much older specimens.