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 are intervertebral discs made of? Answer: fibrocartilage

A: Intervertebral discs are made of fibrocartilage.
****
Q: Question: What kind of reaction adds water to an organic molecule and breaks the large molecule into smaller molecules? Answer: hydration reaction

A: Hydration reaction kind of reaction adds water to an organic molecule and breaks the large molecule into smaller molecules.
****
Q: Question: Which of the following questions is testable in a scientific investigation? Answer: Are cats more active at night than during the day?.

A:
Are cats more active at night than during the day? of the following questions is testable in a scientific investigation.
****