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: Don notices that the patient's heart is expelling less blood with each stroke. The patient's heart has to beat _____ often to maintain consistent blood flow. 
 Answer: more
[EX A]: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.

[EX Q]: Question: If Mona is bouncing radar waves off a test car when training to be a policewoman and she notices the frequency of the waves returning to her radar gun is lower then it was before, what is happening to the car she is pointing the gun at? 
 Answer: decreasing in speed
[EX A]: A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.

[EX Q]: Question: What will happen to the functionality of a structure if Jim increases the surface area of it? 
 Answer: functionality increases
[EX A]:
In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.