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: In ancient times, there was worse medicine. This means there was a _____ death rate. 
 Answer: higher
[EX A]: More recently, the death rate has fallen because of the availability of more food and medical advances.

[EX Q]: Question: As sound waves get shorter their frequency 
 Answer: increase
[EX A]: As wavelength increases, frequency decreases.

[EX Q]: Question: Would it require more strength for a construction worker to move a heavy load of bricks with a pulley that used 
 Answer: 1 rope segment?
[EX A]:
The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.