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: Dan is looking at shells that will be bad candidates for fossilization. He chooses the shells that are 
 Answer: softer
[A]: Hard shells fossilize more readily than soft bodied organisms, as they are better at resisting decay, take significantly longer to break down, and have a greater chance of surviving burial under layers of sediment.


[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
[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.


[Q]: Question: Mona is designing a car in a factory. If she decides to remove cylinders from the car's engine, what happens to the power that engine can output? 
 Answer: decreased
[A]:
The more cylinders a car engine has, the more powerful its engine can be.