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.

[Q]: Question: If an animal is able to eat food more difficult is it more or less likely to reproduce? 
 Answer: less
[A]: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.


[Q]: Question: Wendy decreases the frequency of her radio's sound waves. These waves now have _____ energy. 
 Answer: less
[A]: Higher frequency waves have greater energy.


[Q]: Question: Mary walked farther from Paul. The force of magnetic attraction between them 
 Answer: decreases
[A]:
The smaller the distance between the objects, the greater the force of magnetic attraction.