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.

Input: Consider Input: Question: Dwayne Johnson is weaker than Kevin Hart because he exercises less and therefore his muscles have grown
Answer: smaller.

Output: Exercising muscles increases their size, and bigger muscles have greater strength.

Input: Consider Input: Question: Fred has an isotope that decays slowly. What is likely true about it?
Answer: it can be used to date older specimens

Output: Because these isotopes decay more slowly, they can be used to date much older specimens.

Input: Consider Input: Question: Andy put two magnets at the end of the table, Karen put two magnets right next to each other. Whose magnets had a greater gravitational force?
Answer: Karen
Output: The further objects are away from each other, the smaller the gravitational force.