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.

[EX Q]: Question: If Mary is performing an experiment and she increases the frequency of her electromagnetic wave, what happens to the energy it produces? 
 Answer: increases
[EX A]: The higher the frequency of an electromagnetic wave, the greater its energy.

[EX Q]: Question: Someone that never works out will likely have _____ muscles than someone who lifts weights at home all day. 
 Answer: smaller
[EX A]: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.

[EX Q]: Question: Mel stops after running down the street for exercise. As Mel's heart rate decreases, Mel's blood flow 
 Answer: decreases
[EX A]:
Warming up exercises increases the blood flow to the muscles and increases the heart rate.