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.

Question: What are reversible physical changes in matter called? Answer: changes of state
Changes of state are reversible physical changes in matter called.

Question: What instrument is used to make objects in space appear closer? Answer: telescope
A telescope is used to make objects in space appear closer.

Question: Why is protein an important part of a healthy diet? Answer: It is needed to repair tissue.

Protein is an important part of a healthy diet because it is needed to repair tissue.