In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: What is it called when two waves combine to create a larger wave? Answer: constructive interference
[A]: Constructive interference is when two waves combine to create a larger wave.


[Q]: Question: What are intervertebral discs made of? Answer: fibrocartilage
[A]: Intervertebral discs are made of fibrocartilage.


[Q]: Question: Sickle-cell disease significantly impairs the function of what? Answer: circulatory system
[A]:
Sickle-cell disease significantly impairs the function of circulatory system.